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System Reserved D: Can I change the letter?

  • Thread starter nilsweb
  • Start date Jul 17, 2015
  • Jul 17, 2015

Hi, recently I successfully completed a HDD to SSD clone. However, a new system reserve drive appeared. I know what it is and what it does. The question is: can I change the letter of it. I want my HDD to be the D: drive for storage and I want the system reserved drive to be some other letter like F.  

USAFRet

nilsweb : USAFRet : The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter. Well mine does, I have a system reserved for my SSD and one for my HDD. Here is a screenshot: http:// When I go to remove the letter, I right click on the system reserved, click on change drive letter and paths, then click remove. It then gives me all of these messages that tell me that this could cause problems for other programs and such. Is this what I am supposed to do? Yes. Sometimes with the cloning operation, that partition gets a drive letter. It should not. And yes, when you try to remove that letter, Disk Management will throw up warnings. It is assuming that is a regular partition, and that you may...

The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter.  

USAFRet : The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter. Well mine does, I have a system reserved for my SSD and one for my HDD. Here is a screenshot: http:// When I go to remove the letter, I right click on the system reserved, click on change drive letter and paths, then click remove. It then gives me all of these messages that tell me that this could cause problems for other programs and such. Is this what I am supposed to do?  

nilsweb : USAFRet : The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter. Well mine does, I have a system reserved for my SSD and one for my HDD. Here is a screenshot: http:// When I go to remove the letter, I right click on the system reserved, click on change drive letter and paths, then click remove. It then gives me all of these messages that tell me that this could cause problems for other programs and such. Is this what I am supposed to do? Yes. Sometimes with the cloning operation, that partition gets a drive letter. It should not. And yes, when you try to remove that letter, Disk Management will throw up warnings. It is assuming that is a regular partition, and that you may have applications or other mapping to that drive. Remove the drive letter.  

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Change a drive letter

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Applies To: Windows 11, Windows 10, Windows Server 2022, Windows Server 2019, and Windows Server 2016

If you want to change a drive letter assigned to a drive, or you have a drive that doesn't yet have a drive letter, use Disk Management to change it. You can also mount the drive in an empty folder so that it appears as a folder. For more information, see Mount a drive in a folder .

If you change the drive letter of a drive that already contains Windows or apps, apps might have trouble running or finding the drive. We suggest not changing the drive letter of a drive that already contains Windows or apps.

The following steps show how to change the drive letter.

Open Disk Management with administrator permissions.

In Disk Management, select and hold (or right-click) the volume on which you want to change or add a drive letter and select Change Drive Letter and Paths .

Screenshot showing the Disk Management window with the Change Drive Letter and Paths feature selected.

If you don't see the Change Drive Letter and Paths option or it's grayed out, the volume either isn't ready to receive a drive letter or it's unallocated and needs to be initialized . It might also be that the drive isn't accessible, which is the case with EFI system partitions and recovery partitions. If you've confirmed that your volume is formatted with a drive letter that you can access but you're still unable to change it, that's beyond the scope of this article. We suggest contacting Microsoft Support or the manufacturer of your PC for more help.

To change the drive letter, select Change . To add a drive letter if the drive doesn't already have one, select Add .

Screenshot of the Change Drive Letter and Paths dialog.

Select the new drive letter and choose OK . Then select Yes when prompted about how programs that rely on the drive letter might not run correctly.

Screenshot of the Change Drive Letter or Path dialog that shows how to assign a new drive letter.

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Additional resources

How to change drive letter using Settings on Windows 10

You can now change the drive letter for a partition using the “Manage Disks and Volumes” tools in Settings, and here's how on Windows 10.

Avatar for Mauro Huculak

On Windows 10, each drive you connect to the computer gets assigned a letter automatically to identify the device and make it accessible. However, sometimes, you may need to change the drive letter manually for many reasons.

For example, if you connect a drive (USB flash drive, external hard drive, or secondary hard drive) that was formatted on another device, the drive letter may conflict with another storage device on your computer. You prefer using a specific letter for a drive. Or you’re trying to organize the letters in a specific order.

Whatever the reason it might be, starting with build 20175 (Dev Channel) , Windows 10 introduces a new experience to manage disks and volumes from within the Settings app, which also includes the ability to change the letter of a drive. (Technically, the partition inside the drive receives the letter, not the device. Since if the drive doesn’t have a formatted partition, no letter will be assigned and won’t be accessible.)

In this guide , you’ll learn the steps to change the drive letter using the “Manage Disks and Volumes” tools available on Windows 10 .

Change drive letter on Windows 10

To change the drive letter with Manage Disks and Volumes in the Settings app, use these steps:

Open Settings on Windows 10.

Click on System .

Click on Storage .

Under the “More storage settings” section, click the Manage Disks and Volumes option.

Manage Disks and Volumes

Select the drive with the partition you want to change the letter.

Select the partition.

Click the Properties button.

Partition properties option

Click the Change drive letter button.

Change drive letter on Windows 10

Use the drop-down menu and select the new letter.

Select new drive letter

Click the OK button.

Once you complete the steps, the drive’s partition will now start using the new letter.

Just remember that you can’t change the letter of the partition where Windows 10 is installed, which is usually labeled as “C”, and you shouldn’t try to assign a letter to the system reserved partitions. 

If the settings are not available, it’s because you are not running the version of the operating system that includes the tool. The Manage Disks and Volumes settings are available starting with  Windows 10 build 20175 or higher releases.

In the case that you’re using an older version or an older release, such as Windows 8.1 or Windows 10, then you’ll need to use the Disk Management console, or Command Prompt or PowerShell to change the drive letter.

Avatar for Mauro Huculak

Mauro Huculak is a Windows expert and the Editor-in-Chief who started Pureinfotech in 2010 as an independent online publication. He is also been a Windows Central contributor for nearly a decade. Mauro has over 12 years of experience writing comprehensive guides and creating professional videos about Windows, software, and related technologies, including Android and Linux. Before becoming a technology writer, he was an IT administrator for seven years. In total, Mauro has over 20 years of combined experience in technology. Throughout his career, he achieved different professional certifications from Microsoft (MSCA), Cisco (CCNP), VMware (VCP), and CompTIA (A+ and Network+), and he has been recognized as a Microsoft MVP for many years. You can follow him on X (Twitter) , YouTube , LinkedIn and About.me .

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Itechtics

5 Ways To Change Drive Letter In Windows 11, 10

Change Drive Letter

Windows is programmed to assign drive letters automatically when a new partition is created. If you do not like the drive letter assigned to a partition, or for any other reason, you can change it.

Windows assigns drive letters in alphabetical order, starting with “C.” “A” and “B” are reserved for floppy disk drives. Since the first partition to be created is the system drive, it is usually labeled “C” by default.

For a partition to show up in Windows Explorer , it must have a drive letter assigned to it. Otherwise, you cannot access the partition. This is also true in case you attach a USB flash drive to your computer.

Table of Contents

On This Page

Is it possible to change system drive letter.

Before we discuss how to change a drive letter, we must inform you that you cannot change the drive letter of the system drive, after the operating system has been installed on it. This is because many dependent applications and programs are installed which require the complete path to files to function properly.

If the drive letter in the path to a file is changed, the associated app may no longer function. For example, if the initial path “C:\Windows\System32” was changed to “J:\Windows\System32,” certain components of the app may no longer find the file required.

Similarly, if an app or program is installed on another partition other than the system partition, and it does not automatically pick up the changed path (which most modern apps usually do), you may have to make manual changes to the Windows Registries to provide the new path.

Let us now show you 5 ways to change drive letters in Windows.

How to Change Drive Letters in Windows

Change drive letter using disk management console.

The Disk Management Console provides several options to manage your storage partitions and volumes, such as formatting or creating new partitions, shrinking or expanding them, or assigning/changing drive letters.

Follow the steps given below to change the partition’s assigned drive letter:

Open the Disk Management Console by typing in “ diskmgmt.msc ” in the Run Command box .

Open the Disk Management Console

Right-click on the partition you want to change the letter for, and then click “ Change Drive Letter and Paths ” from the context menu.

Note: If you see that the option is not available or has been greyed out, then the partition’s drive letter cannot be changed.

Change the drive letter or path from the Disk Management Console

From the pop-up wizard, click  Change .

change 1

Select an available drive letter from the drop-down menu in front of “ Assign the following drive letter: ” and then click  Ok .

Assign a new drive letter from Disk Management Console

Click Yes on the confirmation dialog box .

Confirm drive letter assignment

[Conditional] You may then see another warning message. If you do, click  Yes  again, and then  restart  your computer for the changes to fully take effect.

Intimation for drive letter in use

You will now see that the drive letter has been successfully changed.

Change Drive Letter using Command Prompt

If you are a command-line guy, you can also change the drive letter of a partition using the Command Prompt. Here is how:

Open Command Prompt with administrative privileges .

Enter the disk partition mode by typing in the following, and then hitting Enter :

Enter the Disk Partition mode in Command Prompt

Run the following to obtain a list of current partitions and their details.

List all volume details in Command Prompt

Now select the volume for which you wish to change the drive letter by running the following cmdlet.

Replace [Number] in the command below with the volume number you see in the table obtained in Step 3 above.

Select a volume

Now use the following command to assign a new, vacant drive letter to this volume.

Replace [Alphabet]] with the new drive letter that you want to assign.

Assign a new letter to partition using Command Prompt

The new drive letter will now be assigned. You may now close the Command Prompt since the partition will now automatically open in Windows Explorer.

Change Drive Letter using PowerShell

Changing the drive letter using Windows PowerShell allows you to do so using the Command Line Interface (CLI) in a few easy cmdlets, as opposed to the lengthy process of using the Command Prompt. Here is how:

Launch Windows PowerShell with administrative rights .

Run the following cmdlet to get the current partitions and their associated details:

Get volume details in PowerShell

Now use this information to change a partition’s drive letter.

Replace [OldLetter] with the current drive letter for volume, and [NewLetter] with the new drive letter which you want to assign to the volume.

Assign a new drive letter using PowerShell

The drive letter will now change, and the partition will now automatically open in Windows Explorer.

Change Drive Letter from Windows Registry

You can also change the drive letter directly from the Windows Registry. Here is how:

Note: Misconfiguration of critical values in the system’s registry could be fatal for your operating system. Therefore, we insist that you create a system restore point or a complete system image backup before proceeding forward with the process.

You can also use our top selection of disk imaging and backup software so you never lose your data or operating system again.

Open the Registry Editor by typing in “ regedit ” in the Run Command box.

Open the Registry Editor

Now paste the following into the navigation bar at the top of the Editor for quick navigation:

Navigate to the MoutedDevices key

In the right-hand pane, look for the values whose name starts with “ \DosDevices .” This will display the current drive letters for the partitions on your computer.

Right-click on the drive letter you want to change, and then click Rename from the context menu.

For example, to change “J”, right-click “ \DosDevices\J: ” and then click Rename .

Rename Windows Registry to change the driver letter

Now rename the value and replace the old drive letter with the new one, as we did in the image below.

Change drive letter from Windows Registry

Now restart your computer for the changes to take effect.

When the computer reboots, you will see the drive letter has been changed.

Use Drive Letter Changer

Drive Letter Changer is a third-party freeware that can be used to perform a number of different tasks, including changing a partition’s drive letter. Moreover, it is portable software, which means it does not need to be installed on your PC.

Perform the following steps to download and use Drive Letter Changer to change drive letters:

Download the Drive Letter Changer here .

Extract the contents of the compressed folder.

Run the application labeled “ dChanger .”

The application will now automatically detect existing partitions and drive letters.

Right-click on the drive letter you want to change, expand “ Change drive letter ,” and then select a vacant drive letter that you wish to assign.

Change drive letter using third-party software

The drive letter will now change in an instant.

How to Swap Drive Letters Between Volumes

Unfortunately, there is no direct way of swapping drive letters between 2 partitions; you can only assign a vacant drive letter or remove it.

Therefore, if you wish to swap drive letters between two partitions, you must first change the drive letter of the primary partition to something else, so its initial drive letter becomes vacant. Then, change the drive letter of the secondary partition and assign the drive letter recently vacated from the primary partition. Now you can assign the vacated drive letter from the secondary partition to the primary partition.

This can be a bit confusing, so we have drafted down the process in the methods below.

Swap Drive Letter from Disk Management Console

Open the Disk Management Console by typing in “ diskmgmt.msc ” in the Run Command box.

diskmgmt

Right-click on the primary partition and click “ Change Drive Letter and paths “  from the context menu.

Change drive letter from the Disk Management Console

From the popup wizard, click  Remove .

Remove a drive letter

If prompted for a confirmation, click  Yes .

Confirm drive letter removal

You may then see another warning message. If you do, click  Yes  again.

Intimation of drive being in use

Now right-click on the secondary partition and click “ Change Drive Letter and paths ” from the context menu.

Change the drive letter of the secondary drive

Now assign the drive letter from the primary partition and click  Ok .

Assign the primary drive's letter to the secondary drive

In the confirmation box, click  Yes .

Now right-click on the primary partition again, and click “ Change Drive Letter and Paths ” from the context menu.

Change the drive letter of the primary drive again

From the pop-up wizard, click  Add .

Add a new drive letter

Now assign the drive letter initially assigned to the secondary partition, and click  Ok .

Assign a new drive letter to the primary drive

(Optional, but recommended) Now restart your computer so the changes can be finalized.

You can apply the same logic to switch drive letters between 3 or more partitions as well.

Swap Drive Letter using Command Prompt

You can also switch the drive letters between 2 partitions (or more) using the same logic. Here is how:

Enter the disk partition mode by typing in the following, and then hitting Enter .

Now paste the following to obtain a list of current partitions and their details:

List volume details in Command Prompt

Now select the  primary  volume using the cmdlet below.

Replace [Number] in the command with the volume number you see in the table obtained in Step 3 above.

Select a volume

Now remove the assigned drive letter using the following cmdlet.

Replace [Alphabet] with the drive letter currently assigned to this volume.

Unassign dive letter from Command Prompt

Now select the  secondary  volume using the cmdlet below.

Select the secondary volume

Now assign the recently-vacated drive letter from the primary partition to this volume using the given cmdlet.

Replace [Alphabet] with the drive letter initially assigned to the primary volume.

Assign primary drive's letter to the secondary drive using Command Prompt

Now select the primary partition again.

Select the primary volume again

Now assign the drive letter from the secondary partition to this volume.

Assign the secondary drive's letter to the primary drive

The drive letters have been swapped successfully. You can now close the Command Prompt.

You can apply similar logic to other methods to swap drive letters between 2 or more drives. This can be done using Windows PowerShell, Windows Registry, and the Drive Letter Changer software.

How to Fix Affected Programs After Changing Drive Letter

As we already mentioned, changing a drive letter where an app or program may be installed might break it. If the problem is not fixed automatically after a reboot, you may have to fix it manually. Here are a few solutions that might work.

Change Path for Shortcut

If you are trying to run an app or program using its shortcut, then just fixing the path of the shortcut might fix the problem.

Right-click on the shortcut and click  Properties .

Open item properties

Switch to the Shortcut tab, change the drive letters in the “ Target ” and “ Start in ” fields with the new drive letters, and then continue to click Apply and Ok .

Fix issue with apps affected by changing drive letters

Now try re-running the program using the shortcut.

Revert Drive Letter

If the issue occurs after changing the drive letter, then you can try changing it back to the old one using the given methods above.

This is not an ideal case, but it will probably solve the problem.

If you do not wish to revert to the drive letter, you can skip this method and try out the ones discussed below.

Change Drive Letter in Windows Registry

It may be possible that the drive letter change has not been updated in the Windows Registry, therefore it needs to be manually updated. Here is how:

Open the Registry Editor

From the Registry Editor, click Edit and then click Find .

Search inside the Registry Editor

Type in the old location for the app you are trying to troubleshoot, and then click “ Find Next .”

Look for old path inside Windows Registry

When the search wizard finds a match, double-click on the Value in the right pane, and then change the old drive letter with the new one in the text field under “ Value Data .”

Fix app issue caused by changing drive letter from Windows Registry

Now repeat steps 2 through 5 until all paths have been updated with the new drive letter.

Once done, close the Registry Editor and restart the computer for the changes to take effect.

After the computer reboots, check to see if the issue has been resolved.

Reinstall Program

If none of these methods have worked for you, you can try reinstalling the program. Simply delete the app, download the new setup from the vendor’s website, and perform a new install.

Closing Words

People often mistake the drive letter for the name of the volume. However, these 2 are totally different. A drive letter is an alphabet defining a volume/partition on the disk, whereas a name could be anything you want it to be.

By default, Windows names a new volume as “New Volume.” You can change the name of the system volume, but cannot change its drive letter.

That said, we would like to know what prompted you to change the drive letter(s) on your system.

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How-To Geek

What is the system reserved partition and can you delete it.

The System Reserved Partition is a partition dedicated to storing the Boot Manager, Boot Configuration Data, and critical BitLocker files.

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What does the system reserved partition do, when windows creates the system reserved partition, can you delete the system reserved partition, key takeaways.

The System Reserved Partition is a partition dedicated to storing the Boot Manager, Boot Configuration Data, and critical BitLocker files. You can delete the partition, but this frees up very little space. We recommend against it.

Windows 10 and Windows 11 create a special "System Reserved" partition when you install them on a clean disk. Windows doesn't normally assign a drive letter to these partitions, so you'll only see them when you use  Disk Management  or a similar utility.

The System Reserved partition contains two important things:

  • The Boot Manager and Boot Configuration Data:  When your computer starts, the Windows Boot Manager reads the boot data from the Boot Configuration Data (BCD) Store. Your computer starts the boot loader off of the System Reserved partition, which in turn starts Windows from your system drive.  Related: How to Use BitLocker Without a Trusted Platform Module (TPM)
  • The startup files used for BitLocker Drive Encryption:  If you ever decide to  encrypt your hard drive with BitLocker drive encryption , the System Reserved partition contains the necessary files for starting your computer. Your computer boots the unencrypted System Reserved partition, and then decrypts the main encrypted drive and starts the encrypted Windows system.

The System Reserved partition is essential if you want to use BitLocker drive encryption, which can't function otherwise. Important boot files are also stored here by default, although you could store them on the main Windows partition if you prefer.

The BitLocker Drive Encryption page in Windows.

The System Reserved partition consumes 100 MB of space on Windows 7, 350 MB of space on Windows 8, and about 500 MB of space on Windows 10 and Windows 11. The partition is typically created during the  Windows installation process , just before the installer allocates space for the  main system partition .

An unpartitioned drive that is available during the Windows installation process.

Yes, you can, but it requires significant work and will break something if you do it wrong. You really shouldn't mess with the System Reserved partition --- it's easiest and safest to just leave it be.

Deleting the System Reserved Partition is risky and may prevent you from booting into Windows.

Windows hides the partition by default instead of creating a drive letter for it. Most people never notice they have a System Reserved partition unless they fire up disk tools for other reasons. The System Reserved partition is mandatory if you use BitLocker --- or want to use it in the future.

Prevent the System Reserved Partition From Being Created

If you really don't want this partition on your drive --- for whatever reason --- the ideal thing to do is prevent it from being created in the first place. Rather than create a new partition in unallocated space from within the Windows installer, you can create a new partition that consumes all unallocated space by using another disk-partitioning tool before running the Windows installer.

When it comes time, point the Windows installer at the partition you created. The Windows installer accepts that there's no room for System Reserved partition and installs Windows onto a single partition. Bear in mind that you're still not saving the entire 100 MB, 350 MB, or 500 MB that the partition would have taken. The boot files must instead be installed on your main system partition.

To do this, you'll need to use any disk-partitioning software except the graphical one in the Windows installer. However, you can actually do this from within the Windows installer. Just follow the following steps:

  • Press Shift+F10 while installing Windows to open a Command Prompt window.
  • Type  diskpart  into the Command Prompt window and press Enter.
  • Create a new partition in the unallocated space using the diskpart tool. For example, if you have a single drive in the computer and it's completely empty, you can just type  select disk 0  and then  create partition primary  to select the first disk and create a new partition using the entire amount of unallocated space on the drive.
  • Continue the setup process. Select the partition you created earlier when you're asked to create a partition.

You can prevent Windows from creating the Reserved Partition during installation.

Remove an Existing System Reserved Partition

It may be possible to remove a System Reserved partition after installing Windows. You can't just delete the System Reserved partition, though. Because the bootloader files are stored on it, Windows won't boot properly if you delete this partition.

To delete the System Reserved partition, you first have to move the boot files from the System Reserved partition onto the main Windows system drive. And this is harder than it sounds. It involves messing with the Registry , copying various files between drives, updating the BCD store, and making the main system drive the active partition. On Windows 8, it also involves disabling and then re-enabling the Windows Recovery Environment. You'll then have to remove the System Reserved partition and enlarge your existing partition to reclaim the space.

All this is possible, and you'll find various guides on the web that walk you through the process. However, Microsoft does not officially support the technique, and we don't recommend it, either. You'll gain a very tiny bit of space---less than the few hundred MB used by the System Reserved partition---at the cost of potentially messing up your operating system and losing the ability to use BitLocker drive encryption .

For reference, here's why you shouldn't just delete the System Reserved partition. We  used the GParted partition editor on an Ubuntu live CD  to delete the System Reserved partition, and then made the main Windows system partition bootable with no attempt at copying the boot files. We saw a message saying our Boot Configuration Data was missing, and that we'd have to  repair our computer with Windows installation media .

The error you'll see if you delete the Reserved Partition without moving the important files first.

Related: How to Create and Use a Recovery Drive or System Repair Disc in Windows 8 or 10

This partition may look like it's cluttering your drive and wasting space, but it performs important functions and removing it frees up almost no space. It's best to simply ignore the partition, and if you really don't want it to be there, prevent it from being created while installing Windows.

WindowsLoop

How to Change Drive Letter in Windows 10 & 11

Drive or partition letters are not fixed. You can change them. Here is how to change a drive letter in Windows 10 & 11 operating systems.

Windows automatically assigns a unique drive letter for all the drives, partitions, and plugged-in USB drives. Generally, the assigned letters are in incremental order starting with the letter C. For the most part, you don’t have to change the drive letter as it is pretty inconsequential in most cases. However, there might be times when you need to manually modify the drive letter of a drive, partition, or plugged-in USB drive to meet certain requirements.

For example, I want to use the drive letter X for one of my partitions because one of my older scripts requires it. The script won’t work as intended if it doesn’t have that specific drive letter. Since these are older files, and there are many of them, in typical Windows fashion, I tend to swap the drive letter rather than making the necessary changes to the script files.

Thankfully, Windows has several ways to change the drive letter . You can use the built-in partition manager or execute a few commands in the terminal. I will show both ways, follow the method you like.

Table of contents:

Change drive letter using partition manager

Commands to change drive letter.

Note: Close all active programs except your browser before proceeding with the below steps. It will reduce potential conflicts between programs and the drives.

Important: Do not change the drive letter of system volume or boot partition (C drive).

The steps below work the same in Windows 10 and 11.

Though most don’t know, Windows has a built-in partition manager called Disk Management. You can use it to quickly and easily change the drive letter. All you have to do is go to the drive options and choose the new drive letter.

Here is how to do it:

  • Press “ Win + R ” to open Run .
  • Type “ diskmgmt.msc ” and click “ Ok .”
  • Find the drive you want to modify.
  • Right-click on the drive.
  • Choose the “ Change drive letter and paths ” option.
  • Click the “ Change ” button.
  • Select the “ Assign the following drive letter ” radio option.
  • Choose a drive letter from the dropdown.
  • Click “ Ok .”
  • Click “ Yes ” in the warning window.
  • Again, click “ Yes ” in the second warning window.
  • Close the main disk management window.
  • You have successfully changed the drive letter in Windows 10 and 11.

Steps with more details:

First, search and open “Create and format hard disk partitions” from the Start menu. You can also use the “diskmgmt.msc” Run (Win + R) command.

After opening the Disk Management tool, find the drive you want to change the drive letter, right-click on it, and choose the “Change drive letter and paths” option.

Change-drive-letter-option-190820

Now, click the “Change” button.

Click-change-button-190820

Select the “Assign the following drive letter” radio option, choose a drive letter from the dropdown menu, and press “Ok.”

Select-new-drive-letter-190820

You will see a couple of warning prompts. Press the “Yes” button in both prompts.

Accept-changes-190820

Finally, close the Disk Management tool, and you are done.

That is all. You’ve successfully changed the drive letter in Windows. To make the changes take full effect, reboot the system.

Drive-letter-changed-190820

You can use the diskpart command to change the drive letter of any drive, partition, or USB drive in Windows. Here’s how to use the command to modify the drive letter.

Press the Windows Key to open the Start menu . Type “ Command Prompt ,” right-click on the result, and select the “ Run as administrator ” option. You can also right-click the Start menu, choose “Windows Terminal (Admin),” and open the Command Prompt tab in it.

After opening the cmd window, type “ diskpart ” and press Enter. This will launch the diskpart program in the cmd window.

Diskpart-command-190820

Type “ list volume ” and press Enter.

The above command will list all partitions and their volume numbers. Take note of the volume number of the drive you want to modify.

Next, execute the “ select volume #number ” command. Don’t forget to replace the #number with the actual volume number.

Diskpart-list-volume-select-volume-190820

After selecting the volume, execute the “ assign letter=NewDriveLetter ” command. Replace “ NewDriveLetter ” with the actual drive letter you want to assign.

Diskpart-change-drive-letter-190820

Once assigned, close the cmd window.

That is all. Once the diskpart commands are executed successfully, the drive letter is changed instantly. To make the changes take full effect, reboot Windows.

I hope this simple and easy Windows how-to guide helped you.

If you are stuck or need some help, send an email, and I will try to help as much as possible.

Did you know you can change a drive icon to anything you want? Follow the linked article to understand how to do it.

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change drive letter of system reserved partition

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Why has the System Reserved Partion now have a drive letter

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I do not know why it suddenly has a drive letter but removing it will cause no harm.

Being hidden is the default for the system Reserved partition.

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Yes, it will not cause any problems.

Windows always gives that warning to make sure you know what you are doing.

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How to Move the System Reserved Partition Safely to Another Drive

System reserved partition is on the wrong disk? Learn to move system reserved partition to another drive in Windows 11/10/8/7.

Emily

By Emily / Updated on July 7, 2023

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Can you move system reserved partition to another drive?

Is it ok to delete system reserved partition, can i change system reserved drive letter, when do you need to move system reserved partition.

In rare cases, after cloning HDD to a solid state drive (SSD) you may find that system reserved partition is still on the old hard drive (HDD). This means that you can only boot from the SSD when the old HDD is plugged in.

System Reserved Partition

A problem arises when you want to  wipe the old hard drive and use it for file storage or when the original HDD is on the verge of breaking. In these cases, you will probably want to transfer the system reserved partition to the new SSD as soon as possible.

How to move system reserved partition to a different disk?

As the system reserved partition contains the boot files for your computer, it’s a little tricky to move the partition and then have Windows 11/10 detect its new location. You need to carefully follow this step-by-step guide to avoid any errors.

♦ Create a system repair disc just in case Windows can’t recognize the relocated system reserved partition.

♦Using Disk Management create a new partition on the SSD drive with 100MBs of space or greater. To open Disk Management, you need to press Windows + R key and then type "diskmgmt.msc".

♦Assign a drive letter (for example Z:) to the system reserved partition so it can be opened in Windows File Explorer.

♦Copy everything from the system reserved partition to the newly created partition. You must include the Boot folder, bootmgr and BOOTSECT.BAK .

♦Mark the new partition as "System Reserved".

♦Remove the drive letter from the new system reserved partition and then mark it as ‘ Active ’.

♦Now restart your computer to see it successfully boots.

♦If it fails to boot, you can use the Windows system repair disc to perform a Startup repair, it will then force Windows to detect the new system reserved partition.

♦Once the computer has successfully booted, you can safely remove the old system reserved partition.

This method has lots of steps and is difficult for those users who are unfamiliar with Windows Disk Management and Startup repair. If you find this guide too complex then continue reading, as below we will teach you a simple way to clone your system reserved partition.

Clone system reserved partition to SSD

A manual file copy of important partitions has vast potential to cause problems on your computer, this is particularly true when you are copying system-related partitions. To avoid this, it’s recommended that you use a free Partition manager software, like AOMEI Partition Assistant Standard  to clone the partition. By using specialist software, you can effortlessly move your system reserved partition to a different disk.

To clone a system reserved partition:

1. Download AOMEI Partition Assistant Standard (free edition) and launch it.

2. Right-click on the old system reserved partition and select Clone Partition.

Copy Reserved Partition

3. Select Sector by Sector Copy and click Next.

Sector by Sector Copy

4. Select the unallocated space on the SSD as the destination location which will receive the system reserved partition. If there is no unallocated space, then you can shrink a partition by clicking Resize Partition .

Select Unallocated Space

5. In The next screen, you can adjust the size of the new system reserved partition and other parameters. Set the drive letter to None.

Set Drive Letter As None

6. Click Apply to apply these changes.

Apply Copy Reserved Partition

After the conversion, you can change the partition label to System Reserved and set the partition as ‘ Active ’.

✍ Remember, the system reserved partition has to be a primary partition, if your new system reserved partition is a logical drive, then you should first convert it to a primary partition without losing data. Once you have completed this, you will have successfully moved the system reserved partition to a different drive. If you find that your drive has unallocated space after the conversion, then you can merge the unallocated space with any partition that you want to extend.

Further reading: About EFI partition

If you're using a GPT disk as a system disk, you'll find a partition called the EFI partition, not a system reserved partition.

Like a system reserved partition, it's used to lead the PC boot process. EFI partition carries boot loaders or kernel images for all installed operating systems, device driver files for hardware devices in a computer utilized by the firmware at boot time, system utility applications meant to execute before an operating system is started, and data files like error logs.

Although it's important, it no needs to stay at the head of the disk. But, if you find it's between the unallocated space and the target drive you want to extend, it will be a little annoying. In this situation, you can move the EFI partition  to the left/right on the disk.

Move EFI partition

Yes, it is possible to move the System Reserved partition to another drive. The System Reserved partition is a small partition on the hard drive that contains essential system files required for booting the operating system. If this partition is missing, your computer will be unable to boot properly. To prevent such a situation, it becomes necessary to relocate the system reserved partition to another drive.

It is strongly advised not to tamper with or modify the System Reserved partition. The safest and most straightforward approach is to leave it as is. Deleting the System Reserved partition carries significant risks and may result in an inability to boot into Windows.

By default, Windows hides this partition instead of assigning it a drive letter, ensuring its stability and protecting it from accidental alterations. It is crucial to exercise caution and refrain from making any changes to the System Reserved partition to avoid potential complications with the booting process.

Yes, it is possible to change the drive letter assigned to the System Reserved partition. The System Reserved partition is typically assigned a drive letter, such as "C:" or "D:", by default. However, changing the drive letter of the System Reserved partition requires caution and following the proper steps.

It's available to move system reserved partition to another drive, regardless of the Windows version you are currently using—be it Windows 11, 10, 8, 7, XP, or Vista. However, it is crucial to proceed with caution and carefully follow the recommended steps outlined above to ensure a successful and smooth transition of the system reserved partition.

Emily

Related Articles

How to increase system reserved partition windows 7/8/10.

When you try upgrading operating system, you might fail for there is not enough space on system reserved partition. So here we list the best method to help extend System Reserved partition in Windows 11/10/8/7 easily and securely.

System Reserved Partition Missing| Why and How to Recover?

System Reserved partition missing from your operating system so that you cannot boot up normally? This article presents what System Reserved partition is and what to do to recover the partition in Windows and Server.

Hide System Reserved Partition with A Simple Way

System reserved partition contains boot configuration data and other essential data. It is a good idea to hide them to protect information. Refer to this post, it will demonstrate 3 methods helping you perform this operation.

Free Download to Try AOMEI Partition Assistant Now

How to assign permanent letters to drives on Windows 10

You can assign drive letters manually, and in this guide, we show you how on Windows 10.

change drive letter of system reserved partition

On Windows 10, when connecting a removable storage device or an internal hard drive, the system detects and assigns a drive letter automatically to make it usable. However, when reconnecting an external drive (such as a USB flash drive or SD or microSD cards), the system can end up assigning a different letter, which can be annoying.

If you want to see the same drive letter on a particular device, you can manually assign a permanent letter to any drive connected to your computer, and on Windows 10 , you can do this in at least three different ways, using Disk Management, Command Prompt, or PowerShell.

Using this approach will prevent Windows 10 from assigning a new letter or trying to set a letter already in use, which can cause conflicts. Also, it helps to select a drive letter that makes more sense to you.

In this Windows 10 guide, we walk you through several methods to manually assign a permanent letter to a drive, as long as you're connecting the drive to the same device and the letter isn't already in use.

How to assign a drive letter using Disk Management

How to assign a drive letter using command prompt, how to assign a drive letter using powershell.

To manage drive letters with the Disk Management tool, use these steps:

  • Open Start .
  • Search for Create and format hard disk partitions and click the top result to open the Disk Management experience.
  • Right-click the drive and select the Change Drive Letter and Paths option.
  • Click the Change button.
  • Select the Assign the following drive letter option.
  • Use the drop-down menu to assign a new drive letter. Quick tip: To avoid the system trying to assign the same letter to another drive, it's a good idea to start adding letters in backward order. For instance, instead of using D, E or F, it better to start with Z, Y or X when assigning a new letter.
  • Click the OK button.
  • Click the OK button again.

Once you complete these steps, the drive will permanently retain the assigned letter, even after reconnecting it. However, if you connect the drive to another device, it may receive a different letter.

While the easiest way to assign a new drive letter is to use Disk Management, you can also use DiskPart in Command Prompt to perform the same task.

To assign a drive letter using Command Prompt, use these steps:

  • Search for Command Prompt , right-click the result, and then select the Run as administrator option.
  • Type the following command to start DiskPart and press Enter : diskpart
  • Type the following command to list all the available volumes and press Enter : list volume
  • Type the following command to select the volume (drive) to assign a new letter and press Enter: select volume 3 In the command, make sure to change "3" to the number that represents the drive on your device.
  • Type the following command to assign a new drive letter, and press Enter : assign letter=Z The command assigns the letter "Z" to the drive assuming it's available. However, you need to make sure to change the letter for the one that you want to use.

After completing these steps, similar to Disk Management, every time you reconnect the storage to the same device, Windows 10 should assign the same letter automatically.

Alternatively, you can also use PowerShell to change a drive letter on Windows 10 using these steps:

  • Search for PowerShell , right-click the result, and then select the Run as administrator option.
  • Type the following command to list the available drives and press Enter : Get-Disk
  • Type the following command to assign a permanent letter to the drive and press Enter : Get-Partition -DiskNumber 1 | Set-Partition -NewDriveLetter Z In the command, make sure to change "1" to the number that represents the drive that you want to modify, and change "Z" for the new letter that you want to use.

Once you complete the steps, the drive will be accessible through File Explorer using the letter that you assigned, and Windows 10 won't try to change it.

Updated March 7, 2019: We revised this guide to make sure it's current with the latest version of Windows 10.

More Windows 10 resources

For more helpful articles, coverage, and answers to common questions about Windows 10, visit the following resources:

  • Windows 10 on Windows Central – All you need to know
  • Windows 10 help, tips, and tricks
  • Windows 10 forums on Windows Central

Get the Windows Central Newsletter

All the latest news, reviews, and guides for Windows and Xbox diehards.

Mauro Huculak

Mauro Huculak is technical writer for WindowsCentral.com. His primary focus is to write comprehensive how-tos to help users get the most out of Windows 10 and its many related technologies. He has an IT background with professional certifications from Microsoft, Cisco, and CompTIA, and he's a recognized member of the Microsoft MVP community.

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How to Change Drive Letter/Name on Windows 11? Here Are 4 Methods

Windows 11 is the latest operating system released by Microsoft recently. It comes with a quite different outlook. In this post from the MiniTool Partition Wizard website, you can learn about how to change drive letter on Windows 11. 4 methods are introduced and you can choose the one you prefer.

What Is Drive Letter

Drive letter, also referred to as device letter, is an alphabetic character that is assigned to a drive or partition of the storage device on a computer. Usually, the drive letter varies from A to Z and the system partition will be assigned to C by default on Windows.

Once a local drive is given a drive letter, it won’t change automatically when there is only a single operating system. However, the drive letter for a movable storage device such as a USB flash drive or an external hard drive might be different on different computers.

Some partitions won’t be given a drive letter automatically, such as the boot drive, system reserved and recovery partition, and the partitions that cannot be recognized by Windows. Without a drive letter, the drive will be unable to display in File Explorer and users cannot access it.

On Windows 11, the latest operating system offered by Microsoft, users can view the drive letters in File Explorer. If you don’t like the assigned drive letter or the drive letter is missing for some reason, you can change it manually.

In the following content, some common ways to change drive letter on Windows 11 are listed. And you can choose the one you prefer to have a try when it is needed.

Editor’s choice : Change Drive Letter via MiniTool Partition Wizard

MiniTool Partition Wizard Free Click to Download 100% Clean & Safe

  • Launch MiniTool Partition Wizard.
  • Right-click the target partition and select the Change Letter
  • Select a letter and click OK .
  • Click Apply .

Method 1: Change Drive Letter Windows 11 Using Settings

If you have upgraded to Windows 11, you might have noticed that Windows 11 is designed with a new outlook as well as many new features, but the basic user interface is similar to Windows 10.

Here, I’d like to introduce how to change drive letter in Windows 11 via a built-in tool, Windows 11 Settings.

Step 1 : Press Win + I to open Windows Settings quickly.

Step 2 : In the left pane, select System . In the right pane, click Storage > Advanced storage settings > Disks & volumes .

go to Disks & volumes

Step 3 : In the Disks & volumes window, click the drive for which you want to change drive letter and select Properties .

click Properties

Step 4 : Under the Volume data section, click the Change drive letter button.

click Change drive letter

Step 5 : In the pop-up window, select a letter and click OK to keep the changes.

change drive letter

If you don’t like this method, you can continue with the next method. It is also easy to operate.

Method 2: Change Drive Letter Windows 11 Using Disk Management

Disk Management is a preinstalled tool in Windows 11 that can be used to manage connected disks. You can also use it to change drive letter on Windows 11, and you just need to perform a few clicks.

Step 1 : Right-click the Start button and select Disk Management to access Disk Management quickly.

open Disk Management

Step 2 : In Disk Management, right-click the partition where you want to change drive letter and then select the option Change Drive Letter and Paths .

change drive letter and paths

Step 3 : In the pop-up window, click the Change button. On the next page, select a drive letter and click OK to save the changes you have made.

assign drive letter

Step 4 : Click OK when you go back to the window “ Change Drive Letter and Paths for ”.

After the 4 steps, you will get a new drive letter for the selected partition.

Method 3: Change Drive Letter Windows 11 Using Command Prompt

Command Prompt is the command-line interpreter in Windows operating systems and it is kept in Windows 11. With Command Prompt, you can input certain commands and your computer will take corresponding actions. It can activate many features that are not available in the graphical user interface, such as write protecting a drive .

It sounds cool to use Command Prompt. However, you should be careful if you are not familiar with this tool, as you might delete important data or even do harm to the operating system by mistake.

Don’t worry too much. This tool is commonly used to manage disks. It might be a little difficult for new hands, but you can change drive letter on Windows 11 successfully with the following guide.

Step 1 : Press Win + R to invoke the Run window. Then type cmd and press Enter to access Command Prompt .

Step 2 : In Command Prompt, input diskpart and press Enter to launch diskpart.exe, which is used to manage disks and partitions.

input diskpart

Step 3 : Now you can select the target partition and change drive letter for it. And here are two ways you can choose.

Way 1. You can type the following commands one by one in diskpart.exe to select the partition and assign drive letter:

  • Select disk * (replace * with the number of the disk that contains the target partition)
  • List partition
  • Select partition # (replace # with the number of the target partition)
  • Assign letter=k (replace k with the drive letter you want to use)

assign drive letter windows 11

Way 2. Alternatively, you can type the following commands one by one. This way is relatively easier than the first way.

  • List volume
  • Select volume ^ (replace ^ with the number of the target partition and you can identify the number through the label, size, or drive letter)
  • Assign letter=k

assign letter

Step 4 : Input exit and press Enter . You can also click the Close button from the upper right corner to exit Command Prompt.

As you can see, it might take you more time to change drive letter on Windows 11 via Command Prompt. If you haven’t used this tool, you’d better try other ways if you want to save time.

Method 4: Change Drive Letter Windows 11 Using MiniTool Partition Wizard

The last method to change drive letter on Windows 11 is to use a reliable third-party tool and here I recommend MiniTool Partition Wizard. It is a professional disk manager that can be used to create, move, resize, delete, format partitions, recover lost files , check and repair hard drive errors , etc. A huge number of its features are free to use, including Change Letter.

Now, let’s see how to change drive letter on Windows 11 with MiniTool Partition Wizard.

Step 1 : Download MiniTool Partition Wizard by clicking the following button or visiting its official website. Then install and launch it.

Step 2 : When you get the main interface of MiniTool Partition Wizard, right-click the partition where you need to change drive letter. In the pop-up menu, select Change Letter .

click Change letter

Step 3 : In the pop-up window, select a letter and click OK .

change drive letter

Step 4 : When you go back to the main interface, click Apply to execute the pending changes.

Then you can open File Explorer and view the new drive letter.

How to change drive letter on Windows 11? Here are the top 4 methods. And the last one is recommended. Click to Tweet

Bonus Tip: How to Change Drive Name in Windows 11

In addition to changing drive letter, the above tools can also be used to change drive name.

The name of a drive is used to help users to identify what is used for and categorize files. It is also called a volume label. For example, if I use a specific partition to store movies and other videos, I can set the volume label of the partition as videos. In this way, I can quickly find my videos when I need them.

There are multiple ways to rename a drive. The tools used to change drive letter can also be used to change drive name, and here is a simple guide.

Via Settings:

  • Open Windows 11 Settings and go to System > Storage > Advanced storage settings > Disks & volumes .
  • Select the target partition and click Properties .
  • Click Change Label .
  • Type a name and click Apply .

change volume label

Via Disk Management:

  • Open Disk Management .
  • Right-click the partition and click Properties .
  • Type a name in the box and click Apply > OK .

volume properties

Via Command Prompt:

  • Run Command Prompt as administrator.
  • Input label f: music and press Enter (replace “f” with the drive letter of the target drive and replace “music” with the name you want to use).

change volume label

Via MiniTool Partition Wizard:

  • Right-click the target partition and select Label .
  • Type a name and click OK .

Via File Explorer:

  • Press Win + E to open File Explorer .
  • Click This PC .
  • Select the target partition and click its volume label after a few seconds.
  • Input a name and press Enter .

change drive name

Which one do you prefer? Choose one to have a try!

How to change drive letter and name on Windows 11? Here are multiple methods! Click to Tweet

Bottom Line

If you are wondering how to change drive letter on Windows 11, this post can help. Here four effective methods are listed. By the way, it also introduces some ways to change drive name. You can share your ideas with us in the following comment section. For any problems with MiniTool Partition Wizard, you can contact us via [email protected] .

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How can I change the drive letter of the windows partition?

Note: You cannot change the drive letter of the partition that Windows 7 is installed on. In a normal Windows 7 system, this is the "C" drive. http://pcsupport.about.com/od/windows7/ht/change-drive-letters-windows-7.htm

I have moved all the content of the original C drive to an SSD.

Now I want the SSD to be the C drive and the place where windows boot in.

How would I do so?

Blackjack00's user avatar

  • What with the downvote? –  register user Feb 28, 2013 at 3:35

2 Answers 2

You are not able to rename the drive letter that contains the Windows operating system. This is because Windows files rely on the assigned drive letter staying the same, and your computer needs to know which hard drive it can load Windows from.

Master Boot Record and Partitioning Hard Drives

Whether a drive is labeled "C" has nothing to do with whether windows boots from that drive or not. When you computer boots, it load Windows from the files on whatever drive the Master Boot Record (MBR) tells it is a bootable partition. You may have copied over the C drive, which is a partition, but you have not changed the MBR, which is a segment of code outside of the partitions, commonly referred to as the partition table.

As you computer was setup, the C drive partition was created on the original hard drive. If you are not familiar with partitioning, it is essentially the process of creating a section on the physical hard drive that will serve as a "virtual" disk within windows. A single drive could be partitioned into many drives, such as a C drive, D drive and E drive; all at the same time. If you have multiple physical drives, as is currently the case, then you will have at least a C drive on your original disk, and an additional drive letter for the SSD (assuming you have them both connected at the same time).

The MBR keeps track of the partitions and which ones can be booted from. When the OS is installed on that C drive, it added a flag to the MBR which tells the bios that this partition is bootable. That way, when the bios goes looking for potential drives to boot to, it finds the C drive and starts loading windows.

Some of this information and a great deal more can be found in this about article, which nicely summarizes the MBR: http://pcsupport.about.com/od/termsm/g/masterbootrec.htm

Wikipedia has a more indepth article on the topic: http://en.wikipedia.org/wiki/Master_boot_record

Moving Windows to a New Drive/Partition

In your case, you want the computer to start booting from you SSD. There are multiple ways to go about this. The easiest and least technically demanding is to reinstall windows onto your SSD. If you have not already, you can use the recovery disc creation program that came on your computer to create Factory Reset discs. Then, use these discs to install windows on your SSD. Finally, transfer any files you need from your old hard drive to the new one. I work for an IT firm and this something we do on a daily basis, when performing hard drive replacements.

There are some utilities that will allow you to edit the MBR and make drives bootable. I believe Parted Magic is one of these. However, I would not recommend this. You will have no end of trouble when you try to boot into windows on the new drive, even if it is a C partition, after being copied to a new HD with a different size/etc. I highly recommend you install windows using the factory reset disk.

  • Can you include some of the details from that link in your answer? Just providing links as answers is discouraged on stackexchange sites. –  slm Feb 25, 2013 at 5:51
  • I will do that. Thank you for the advice. I am new to stack. –  Blackjack00 Feb 25, 2013 at 5:54
  • Undoubtedly you should include the link as reference from where you got the information. :) –  avirk Feb 25, 2013 at 8:53
  • Added some links back. Most of that is from my head. I will have to read up on how much linking is preferred. –  Blackjack00 Feb 25, 2013 at 18:44

It sounds like you should have cloned the original C: to your new SSD then swapped them out in your computer. You could then reformat the old C: to use and an extra drive.

As it stands your best bet is to use the Windows Easy Transfer tool to backup your data then reinstall Windows on the SSD and restore the data, again using the Windows Easy Transfer tool.

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All You Need to Know About the System Reserved Partition in Windows  

Windows is a multilayered operating system. Sometimes, you think you’ve got it all figured out, only to be pleasantly surprised by an obscure setting or an out-of-the-way option that proves to be a game changer at that moment. Take, for example, the “System Reserved”…

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  • 12 Mar 2021
  • 9 min to read

All You Need to Know About the System Reserved Partition in Windows  

What Is the System Reserved Partition?

Here are several methods to open disk management in windows:, what is stored on the system reserved partition, how to delete the system reserved partition (and should you do so), can the system reserved partition be extended, follow the steps below to prevent the srp from being generated when installing windows on an empty disk:.

Windows is a multilayered operating system. Sometimes, you think you’ve got it all figured out, only to be pleasantly surprised by an obscure setting or an out-of-the-way option that proves to be a game changer at that moment. Take, for example, the “System Reserved” partition. It could very well be one of the best-kept secrets on Windows PCs.

Unless you’ve had the good fortune to see it in Disk Management (and who even opens Disk Management, anyway?), you’re unlikely to be aware of its existence. Yes, it exists, and not just exists: it stores a number of important files.

You may also have encountered an error message related to the reserved partition while trying to upgrade or update Windows.

Curious yet? We were, too, when we learned about it. Read this guide for a complete low-down on the System Reserved Partition on Windows 10/8.1/7 and Windows Server 2008 and later.

The System Reserved Partition (often abbreviated to SRP) is a hidden partition created on Windows 7 and later. Windows Server 2008 and later also have this partition. Versions of Windows prior to Windows 7 do not have this hidden partition.

The partition is carved out of the main system drive, which houses the operating system. It is automatically created while a clean copy of Windows 10/8.1/7 is being installed.

This partition is hidden by default, and most users aren’t even aware of its existence. Although hidden and taking up a relatively miniscule amount of disk space, this partition houses important files that are fundamental to how Windows operates. Boot files, recovery files, and files related to the native BitLocker encryption system are stored on this partition.

How to Know If You Have a System Reserved Partition

The answer to this question is pretty simple. If you’re using Windows 10, 8.1 or 7, then you have a hidden System Reserved Partition. The only exception is if you’re using a gifted PC from which the SRP has already been removed.

You can check that the System Reserved Partition is on your PC by opening the handy Disk Management utility in Windows. This tool helps you to modify partitions on your hard drives.

  • Through Search. Press the Windows key, type “disk management” and click Enter.
  • Through the Power User menu. Hold down the Windows key and press X. Select Disk Management in the Power User menu.
  • Through the Control Panel. Press the Windows key, type “control panel” and press Enter to open the app. Set the “View by” mode in the Control Panel to Category. Select System and Security > Administrative Tools > “Create and format hard disk partitions”.
  • Through Run. Hold down the Windows key and press R. Type “diskmgmt.msc” into Run and click OK.

After launching the Disk Management utility, you will see a list of the partitions on your hard drives. Look for the partition named System Reserved. That’s the hidden partition that stores boot and BitLocker data.

Now that you are aware of the System Reserved Partition on your PC, you may be wondering what it contains and what it does. Both questions are different ways of asking the same thing: what is the purpose of the System Reserved Partition on your computer?

There must be a reason for the presence of a hidden reserved partition that isn’t even assigned a drive letter, right? If you think so, you’re right. The System Reserved Partition exists for several very important reasons. Below are three of them:

  • The System Reserved Partition stores the Boot Manager and Boot Configuration Data. The Boot Configuration Data, or BCD, is data relating to your system’s boot operations and is, basically, information regarding how the system boots. The Boot Manager manages the boot process, ensuring everything is in order. The System Reserved Partition stores Boot Manager’s data, which is accessed every time you start up the PC.
  • The System Reserved Partition stores BitLocker files. You can’t use BitLocker encryption without the System Reserved Partition. This is because the startup files used for BitLocker are stored on this special partition — they can’t be stored anywhere else.
  • The System Reserved Partition contains Windows RE files. In Windows 10, some files related to the recovery process are stored on this partition.

To sum up, the special partition without a drive letter is reserved for Windows boot files, BitLocker startup files, and Windows Recovery files (in Windows 10).

Note: Although the System Reserved Partition is reserved for boot and BitLocker files, a few third-party applications can write to it. These tend to be antivirus and security programs. Sometimes, they can populate the SRP with too much data, making it full and possibly leading to errors such as “We couldn’t update system reserved partition” with the error code 0xc1900104 or error code 0x800f0922 when attempting a Windows update.

Now that you know what is stored on the SRP, you might want to see the contents for yourself. There’s a very good reason that Windows keeps this partition hidden by default. Because of the critical nature of its contents, it won’t do if anything on it is mistakenly deleted. It can damage the Windows boot sector and lead to the system being unable to boot up.

However, you can easily view the contents of the SRP anyway. What stands between you and the partition is a drive letter. Once you assign it a drive letter, you can open and exit the partition as often as you wish.

To assign a drive letter to the partition, select and right-click the partition and click Change Drive Letters and Paths. Assign a drive letter and save your changes. Make sure that you choose a unique letter that hasn’t been assigned to another device.

Once you’ve done it, the SRP becomes visible in File Explorer. However, the contents of the partition remain hidden. To make them visible, you must enable the viewing of hidden files, folders and drives. Follow the steps below to do that in Windows 10:

  • Hold down the Windows key and press E to open a File Explorer window.
  • Click the File tab and select “Change folder and search options”.
  • Switch to the View tab of the Folder Options dialog.
  • Under “Hidden files and folders”, tick the “Show hidden files, folders and drives” checkbox.
  • Click Apply and then OK to save the changes.

If you’ve done everything right, the System Reserved Partition will show up as a separate drive under “Devices and drives” in This PC.

Simply double-click the drive to view its contents. You will discover that most of the folders stored on the system partition seem to be unique. Below is an explanation of the partition’s contents:

  • Boot. The files in this folder are related to system boot configuration and the Boot Manager.
  • Recovery. The files in this folder are related to Windows Recovery. These files enable recovery tools that can help during system repair, such as Startup Settings, Safe Mode, etc.
  • Bootmgr. This is the main Boot Manager file. It is responsible for locating which partition Windows is stored on and initializing the boot process.
  • BOOTNXT. This small file is related to Windows Startup options for USB, such as Windows To Go.
  • BOOTSECT.BAK. This file is a backup of the PC’s boot sector. It is required in case the boot sector becomes corrupt. When Windows is repairing a corrupt boot sector, this backup comes in handy.

So, these are what you get on the system reserved partition. Obviously, they are critical items needed for Windows startup, BitLocker security, and recovery options.

I believe the real question should be, “Why should you delete the SRP?” There are obvious and important reasons why the reserved partition is better left alone.

Microsoft obviously intended the partition to remain hidden. That’s because of the important files it contains. Moving these files or deleting them along with the partition can cause critical system damage.

Moreover, there is no need to delete the partition if you want to free up extra space on your hard drive. The System Reserved Partition consumes 100 MB of space on Windows 7, 350 MB of space on Windows 8, and 500 MB of space on Windows 10. When compared to the massive amount of space on a typical hard drive, those figures really aren’t much.

Moreover, deleting the partition won’t free up 500 MB for you on Windows 10. The boot files and Windows RE files will still be present – they will be migrated to your main partition. The only thing you’ll really remove are the BitLocker files. Surely, those alone aren’t worth all the bother of deleting a small, unobtrusive partition?

If you feel like your hard drive can do with some more free space but don’t know where to look, we recommend Auslogics BoostSpeed to you. Its collection of utilities will help you discover and delete junk files , unneeded registry keys, and unused applications.

Finally, the partition insures you against a complete loss of data in the case of system failure. If your main system partition becomes corrupt, the files from the reserved partition can help you repair the system and get Windows working normally again. You lose that cushion if you move everything to the main partition.

Finally, no System Reserved Partition, no BitLocker. The equation is that simple. The hidden partition is mandatory if you use BitLocker encryption to secure your data or plan to do so in the future.

If you still wish to remove the SRP, this is possible. You will first need to unhide the partition and assign it a drive letter, as explained above. Once you can access the partition with File Explorer, you have to move the boot files to your Windows partition and disable Windows RE to proceed. Trust us, that isn’t as simple as it sounds. Doing all this correctly involves a lot of cumbersome processes, like editing the registry, updating or repairing the boot configuration data and making the C drive the active boot partition. Unless you have a really good reason, all this effort to save a few megabytes of space just isn’t worth it.

If you still wish to go ahead, you can consult any of the guides that explain how to do it safely. Microsoft, however, doesn’t support SRP-removal techniques, and neither do we.

If space is your major motivation for wanting to remove the partition, you can hunt more productively in other areas of your computer, such as the temporary files folder or even the registry. You can use Auslogics Registry Cleaner to free up as much space in a few seconds as you’d get from removing the SRP after an hour of work.

Perhaps, instead of looking for a way to remove the partition, you’re wondering how to enlarge its size.

There are some situations that make extending the hidden partition desirable. For example, some users were unable to upgrade to Windows 10 from Windows 7 because new files couldn’t be added to the partition. Thus, they got the “We couldn’t update the system reserved partition” error message.

Unfortunately, there is no straightforward way to natively allocate more space to the SRP once it has been created and is in use. We certainly haven’t discovered any surefire method. However, do a quick web search and you’ll discover some third-party tools that claim they can expand the partition size for you.

If you’re stuck with your current OS due to this type of error, we recommend you back up your data and perform a clean install of Windows 10 to bypass the issue.

How to Stop the System Reserved Partition From Being Created

Rather than troubling yourself wondering how or whether to remove the hidden partition, you can stop it from being created in the first place. Just keep in mind that you can only do this while clean-installing Windows 10/8.1/7.

If you’re installing Windows on a completely empty disk, the process of stopping the SRP from being created becomes much easier. Alternatively, you can format the disk first to wipe everything from it.

  • Start the installation process as usual.
  • When you get a pop-up telling you that Windows might create additional partitions for system files, click OK
  • Windows will create two partitions on the hard drive: Disk 0 Partition 1: System Reserved and Disk 0 Partition 2.
  • Select Disk 0 Partition 2 and click Delete. Click OK on the confirmation prompt
  • Disk 0 Partition 2 will become Disk 0 Unallocated Space in a moment.

At this point, what you need to do is extend the System Reserved Partition to cover all the space on Disk 0. This means extending it over the unallocated space.

  • Select Disk 0 Partition 1: System Reserved and click Extend
  • Next, select the System Reserved Partition and click Format.

When the formatting is complete, go ahead and install Windows. The boot files and Windows Recovery files will be saved on the same partition.

All in all, since the System Reserved Partition contains important files and doesn’t take up significant space, it is best to ignore it and move on with your life.

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How to Hide System Reserved Partition in Windows 11/10/8/7 [Step-by-Step Guide]

This article teaches you how to hide System Reserved partition and provides detailed guides on three ways to achieve this goal.

 Windows 11/10/8/7  100% Secure

change drive letter of system reserved partition

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change drive letter of system reserved partition

Many users find the System Reserved partition in Windows File Explorer but don't need to access it very often. So, many users want to hide that partition. This article shows you how to hide the System Reserved partition in detail. Please read on.

What Is a System Reserved Partition

The  System Reserved partition  is a critical partition that contains the Boot Manager code, boot files for BitLocker Drive Encryption, and the boot configuration database. Especially the recovery environment data is also stored on the partition in Windows 10. Therefore, on fresh installs of Windows 10, this drive is usually situated before the system partition (usually the C drive). 

system reserved partition

Since we don't access the System Reserved partition, why do we hide it instead of deleting it? The two main reasons are as follows:

  • The System Reserved partition stores the boot manager, boot configuration data, and startup files for Bitlocker drive encryption.
  • Hiding the System Reserved partition can ensure its integrity, and the system can be successfully restored to factory settings after an accident.

However, how to hide the System Reserved partition safely and efficiently? Don't worry. You can get three ways to hide it in the next part.

Hide System Reserved Partition Safely and Efficiently - 3 Ways

This part lists three ways to hide a System Reserved partition and gives detailed guides on each, containing three utilities. You can choose a suitable way based on your needs. The three ways are as follows:

Hide System Reserved Partition via EaseUS Partition Master - Easy

Hide system reserved partition via disk management - medium, hide system reserved partition via diskpart - difficult.

Among these ways, it is obvious that EaseUS Partition Master is the easiest way and doesn't require much computing knowledge. Now, let's see how to hide a System Reserved partition via EaseUS Partition Master.

EaseUS Partition Master is easy to use and allows you to hide the System Reserved partition with simple clicks. Its prompts will guide you when you act. It supports Windows 11/10, Windows 8/7, and Windows XP/Vista. Download it and follow the steps below to hide your System Reserved partition.

Option 1 - Hide Partition

  • Right-click the partition, and choose "Advanced". Select "Hide" from the drop-down menu.
  • Then you will see a window showing the notification. Read the instructions and click "Yes" to continue.
  • Click the "Execute 1 Task(s)" button in the top-left corner. Then, click "Apply" to hide your partition.

Option 2 - Unhide Partition

  • Right-click the partition you want to view and access. choose "Advanced" and select "Unhide" from the drop-down menu.
  • Read the instructions and click "Yes" to continue.
  • Click the "Execute 1 Task(s)" button in the top-left corner. Check the pending operations, then click "Apply" to unhide the partition on Windows 11/10/8/7.

Besides hiding the reserved partition, it has a lot of other features as a professional  disk partition  manager:

  • Resize encrypted partition
  • Resize/create/delete partitions
  • Move System Reserved partition
  • Unhide/ hide drive in Windows 10
  • Remove the  SSD System Reserved  partition

Download EaseUS Partition Master to help with your issues.

If you don't want to turn to a third-party tool, you can use Disk Management to hide the System Reserved partition.  What is Disk Management ? It is a built-in tool with Windows to help extend, shrink, or hide a partition. Here are the steps for hiding the System Reserved partition:

Step 1. Press W + R to bring up the run window. Type diskmgmt.msc and press Enter, which will open Disk Management.

Step 2.  Right-click on the target System Reserved partition and choose the "Change drive letter and paths" button.

Step 3.  Click on Remove in order to remove the assigned drive letter, and then click Yes as the warning window appears. This picture below sets E drive as an example.

hide a partition via disk management

Now, you can click open File Explorer and check if the System Reserved partition has been hidden.

If you are an experienced user, you can use Diskpart commands to hide the System Reserved partition. Be careful when you type the commands to avoid data loss.

Step 1. Right-click the Windows icon and choose "Run."

Step 2. Type cmd in the run window to launch Command Prompt.

Step 3. Type diskpart and open the Diskpart window.

Step 4. Hit "Enter" each time you type one of the following commands:

  • select disk 0
  • list partition
  • select partition 1
  • detail partition
  • set id=17  (this will change the partition type from 07=Unhidden NTFS partition to 17=hidden NTFS partition)
  • detail partition (Check that the partition is now 17 and hidden. Other volume details and the partition's label appear.)

hide partition via cmd

Here are some links related to the System Reserved partition. Click them if you are facing similar problems:

With these three methods, you can easily and safely hide the System Reserved Partition. However, if you are not familiar with Disk Management and Diskpart, it is recommended that you use EaseUS Partition Master. This is a trusted third-party tool that allows you to hide the System Reserved partition in three steps. It can also delete/create/remove any partitions.

Don't hesitate to download it to help. You will enjoy what it brings to you.

Hide System Reserved Partition FAQs

There are some other questions related to hiding the System Reserved partition. If you get similar problems, continue to read.

1. Is it okay to hide the System Reserved drive?

Yes, hiding the System Reserved drive doesn't delete any data stored on the drive. You can unhide it when necessary.

2. How do I hide the System Reserved partition in Windows 11?

Follow the steps below to hide the System Reserved partition:

Step 1. Open Disk Management and right-click on the System Reserved partition in the Disk Management window.

Step 2. Select and click the "Change drive letter and paths" option and choose "Remove."

Step 3. Click "Yes" when you get a warning message.

3. Should I delete the System Reserved partition?

Actually, the answer is "No." The System Reserved partition is essential since it stores the boot manager code, boot files for BitLocker drive encryption, and the boot configuration database.

How Can We Help You

change drive letter of system reserved partition

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Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge. She has written over 200 articles to help people overcome computing issues.

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I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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change drive letter of system reserved partition

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IMAGES

  1. The System Reserved Partition in Windows 10

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  2. Move System Reserved Partition to Another Drive in Windows 10

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  3. How to Move the System Reserved Partition Safely to Another Drive

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  4. [FIX] This PC Can't Run Windows 10

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  5. How to Change Drive Letter/Name on Windows 11? Here Are 4 Methods

    change drive letter of system reserved partition

  6. Resize System Reserved Partition Windows 10

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VIDEO

  1. How to Change Drive Letter in Windows 11

  2. How to Change Drive Letter in Windows 10

  3. How to Change Drive Letter in Windows 11/10

  4. How to change drive letter of partition

  5. How To Change Drive Letter Of Our Laptop| Laptop ke Drive Letter Kaise Change Kre

  6. How to Extend System Reserved Partition On Windows 11

COMMENTS

  1. System Reserved D: Can I change the letter?

    #1 Hi, recently I successfully completed a HDD to SSD clone. However, a new system reserve drive appeared. I know what it is and what it does. The question is: can I change the letter of it....

  2. Drive Letter assigned to system reserved partition

    2 Answers Sorted by: 0 Fixed the issue myself. I had a program called MiniTool Partition Wizard which is what I used to remove Ubuntu and rebuild the MBR. I used that and removed the drive letter from the system reserved partition and it worked like a charm.

  3. How to Change a Drive Letter on Windows 10 or Windows 11

    Click the Start button, type "Disk Management" in the search bar, and then hit Enter. The program name displayed in the search will not be Disk Management. It will be "Create and format hard disk partitions." You could also hit Windows+X or right-click the Start button, and then click "Disk Management."

  4. change windows "System" partition to another drive

    1 A few key bits of info that weren't really obvious elsewhere online that I was able to use to figure this out: (when using a recovery cd/live usb to repair windows boot) Commands like bootrec and bcdedit default to assuming the first hard drive is your system partition, and in fact, running some of these will make it your system partition

  5. Change a drive letter

    In Disk Management, select and hold (or right-click) the volume on which you want to change or add a drive letter and select Change Drive Letter and Paths. Tip If you don't see the Change Drive Letter and Paths option or it's grayed out, the volume either isn't ready to receive a drive letter or it's unallocated and needs to be initialized .

  6. How to change drive letter using Settings on Windows 10

    Click the Properties button. Partition properties option. Click the Change drive letter button. Change drive letter on Windows 10. Use the drop-down menu and select the new letter. Select new drive letter. Click the OK button. Once you complete the steps, the drive's partition will now start using the new letter.

  7. How to Use the Diskpart Utility to Assign and Remove Drive Letters

    select volume 3 You should see a message that the volume is now selected. At this point you can easily assign a new drive letter. Just type in this command, substituting R for the drive letter you'd like to use: assign letter=R Make sure to hit enter once you're done, of course.

  8. How to change a drive's letter in Windows

    If you're using Windows 11, a straightforward way to change the drive letter of a partition or removable drive is offered by the Settings app. Open Settings ( Win + I) and select System in the left sidebar. Then, on the right side of the window, click or tap on Storage. Scroll down to locate the Storage management section.

  9. 5 Ways To Change Drive Letter In Windows 11, 10

    Subhan Zafar | May 15, 2023 Windows is programmed to assign drive letters automatically when a new partition is created. If you do not like the drive letter assigned to a partition, or for any other reason, you can change it. Windows assigns drive letters in alphabetical order, starting with "C." "A" and "B" are reserved for floppy disk drives.

  10. What Is the System Reserved Partition and Can You Delete It?

    Windows What Is the System Reserved Partition and Can You Delete It? By Chris Hoffman and Nick Lewis Updated Apr 1, 2023 The System Reserved Partition is a partition dedicated to storing the Boot Manager, Boot Configuration Data, and critical BitLocker files. Hannah Stryker / How-To Geek Readers like you help support How-To Geek.

  11. How to Change Drive Letter in Windows 10 & 11

    Press " Win + R " to open Run. Type " diskmgmt.msc " and click " Ok .". Find the drive you want to modify. Right-click on the drive. Choose the " Change drive letter and paths " option. Click the " Change " button. Select the " Assign the following drive letter " radio option. Choose a drive letter from the dropdown.

  12. Why has the System Reserved Partion now have a drive letter

    Zelinko Replied on October 24, 2013 Report abuse In reply to Lead3's post on October 20, 2013 It's giving a warning that removing the drive letter may cause programs to work incorrectly. Also looking at this more it looks to be the System Reserved Partition on the other drive.

  13. How to assign a driver letter for System Reserved Partition

    For test purpose, I need to put some data into System reserved partition for UEFI/GPT disk. Below is what I see in diskpart: ... You can assign drive letters to the System partition on a GPT disk, but the picture shown has the underline of the Reserved disk which cannot have a drive letter assigned to it.

  14. How to Move the System Reserved Partition Safely to Another Drive

    To open Disk Management, you need to press Windows + R key and then type "diskmgmt.msc". ♦Assign a drive letter (for example Z:) to the system reserved partition so it can be opened in Windows File Explorer. ♦Copy everything from the system reserved partition to the newly created partition.

  15. How to assign permanent letters to drives on Windows 10

    Search for Create and format hard disk partitions and click the top result to open the Disk Management experience. Right-click the drive and select the Change Drive Letter and Paths option. Click ...

  16. How to Change Drive Letter/Name on Windows 11? Here Are 4 Methods

    Bottom Line What Is Drive Letter Drive letter, also referred to as device letter, is an alphabetic character that is assigned to a drive or partition of the storage device on a computer. Usually, the drive letter varies from A to Z and the system partition will be assigned to C by default on Windows.

  17. How can I change the drive letter of the windows partition?

    A single drive could be partitioned into many drives, such as a C drive, D drive and E drive; all at the same time. If you have multiple physical drives, as is currently the case, then you will have at least a C drive on your original disk, and an additional drive letter for the SSD (assuming you have them both connected at the same time).

  18. Removing System Reserved and Changing Drive Letter in Windows 11

    This video tutorial will walk you through the process of removing the system reserved partition and changing the drive letter in Windows 11.Subscribe for mor...

  19. All You Need to Know About the System Reserved Partition in Windows

    To assign a drive letter to the partition, select and right-click the partition and click Change Drive Letters and Paths. Assign a drive letter and save your changes. ... Moreover, there is no need to delete the partition if you want to free up extra space on your hard drive. The System Reserved Partition consumes 100 MB of space on Windows 7 ...

  20. Changing the Windows System Drive Letter

    Sometimes Windows system drive letters get altered. Here's a procedure you can try when you can't use the Control Panel's Disk Management tools to solve the problem. ... you can typically right-click the partition of interest, select Change Drive Letters and Paths, click Change, and select an available drive letter for the Assign the following ...

  21. How to assign a driver letter for System Reserved Partition

    Monday, June 24, 2019 8:07 AM All replies 0 Sign in to vote Hello, You can directly run list volume command after opening DISKPART. It should list System Reserved Partition and you can then assign the drive letter (see screenshot below). Hope this helps! Microsoft MVP (Windows and Devices for IT) Windows Insider MVP

  22. How to Hide System Reserved Partition in Windows 11/10/8/7 ...

    Follow the steps below to hide the System Reserved partition: Step 1. Open Disk Management and right-click on the System Reserved partition in the Disk Management window. Step 2. Select and click the "Change drive letter and paths" option and choose "Remove." Step 3. Click "Yes" when you get a warning message.