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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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.  

[quotemsg=16272077,0,1744641][quotemsg=16272002,0,1282023]The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter.[/quotemsg] 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?[/quotemsg] 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.  

[quotemsg=16272002,0,1282023]The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter.[/quotemsg] 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?  

[quotemsg=16272077,0,1744641][quotemsg=16272002,0,1282023]The System Reserved should not have a drive letter at all. In Disk Management, remove that drive letter.[/quotemsg] 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?[/quotemsg] 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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How do I hide the System Reserved partition?

How do I hide the System Reserved partition from the Windows Explorer?

On the above screenshot, I want to get rid of System Reserved (D:) . How do I do that?

I will never need to access it from there, why would I need the entry then?

PS: I want to hide it, not delete it.

• windows-8-preview
• system-reserved-partition

5 Answers 5

Remove the drive letter for the system reserved partition. If you have a multi-boot system, this could cause problems depending on where your system boots from.

To remove the drive letter and hide the partition from explorer and my computer:

Open Computer management on the local computer by right clicking on Computer in Windows Explorer and choose manage . Then click on Disk Management in the left hand pane.

(Or just type diskmgmt.msc into the run dialog)

Right click on the shaded area for Drive D: System reserved in the lower right hand window.

Click on Change drive letter or paths

Highlight D and click remove

If you receive error messages that the drive might be in use or that programs might not run correctly, don't panic . It is OK to remove the drive letter. Once a letter is not assigned, the drive will not appear in windows explorer.

This works in Windows Vista, Windows 7, Windows 8, and Windows 10.

• 1 "If you have a multi-boot system, this could cause problems depending on where your system boots from. " <- could you elaborate on that part? In what circumstances might that cause problems, and why? –  Sundar R Aug 24, 2018 at 18:44
• 1 Sure, this post was written at a time when Windows XP was still actively supported, and a dual boot bios/CSM system with Windows XP and a later Vista, 7, etc, could refuse to boot if the ntldr for XP was located in the system reserved partition. –  G Koe Aug 24, 2018 at 21:06
• 2 It's an edge case that was only likely to affect a VERY small number of people, but was worth adding a note of caution at the time. GRUB and other non NT boot loaders don't really care about Windows drive letters, except certain versions of OS/2. –  G Koe Aug 24, 2018 at 21:12
• Thank you, that makes sense. I've removed the drive letter and restarted in the meantime, and (predictably) haven't had any issues. –  Sundar R Aug 28, 2018 at 10:03

I encountered the same issue. In DiskMgmt GUI no drive letter was assigned to the hidden system partition but in Windows Explorer it had drive letter H:

I solved it as following: In a command prompt I started DiskPart.exe , then ran:

Now the drive letter is gone in the Explorer.

• 3 This was the only answer that worked for me. Worth noting that "Remove" just gets rid of the letter, it doesn't remove the partition! –  xorsyst Dec 19, 2016 at 11:13

In some cases - as seen in this question - removing the drive letter for the System Reserved partition can cause other partitions on that drive to not show up in Windows Explorer. To avoid that, a registry tweak must be used to maintain the drive letter but hide the drive.

Open the Registry Editor (type regedit in the Run dialog) and navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer , creating the Explorer key if necessary. Create a new DWORD value called NoDrives . The data for that value should be a bitmask with set bits indicating a hidden drive. To hide only the A drive, set the data to 1 . To hide the B drive, set the data to 2 in decimal ( 10 in binary) - the second bit corresponds to the B drive. Similarly, 9 would hide the D and A drives (it's 1001 in binary).

A logoff/logon cycle may be required for this change to take effect.

• What if E , F or W drives? –  zwcloud Jul 22, 2018 at 6:08
• 1 @zwcloud E is the fifth letter of the alphabet, so you need to set the fifth bit (add 16). For F , add 32. I think W would add 4,194,304. To hide all three of those, the final hex value would be 0x400030 if my calculations are correct. –  Ben N Jul 22, 2018 at 15:50

Complete answer (changes are saved after reboot):

Open Windows Powershell or Command line as Administrator

Start -> Search -> Powershell or CMD -> Run as Administrator

Open Diskpart

Select disk

select disk 0

Identify the EFI partition showing up in Explorer

list partition

Select the EFI partition (Replace 'X' with the correct partition number):

select partition X

Remove the EFI partition's drive letter (it won't delete the partition, just remove the mount point):

Exit Diskpart

Open RegEdit

Start -> Search -> Type "regedit"

Find the right key/folder

Computer\HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

If the EFI partitions drive letter is still in registry, delete the value.

For example: \DosDevices\X:

Close RegEdit and reboot.

Ref: https://answers.microsoft.com/en-us/windows/forum/windows_10-files/window-10-efi-system-partition-and-recovery/e7389cec-f0a3-4f85-bc7e-8b22be22680b

I faced the same problem. To solve it, I did the following:

• Right click on C: Drive and select Properties
• Now you can see the Local Disk(C:) Properties Model Dialog Box
• Now select the tools tab feature in the Local Disk(C:) Properties Model Dialog Box
• Now click on Check Now button and you can see the Check Disk Local Disk (C:) Model Dialog Box
• And at last select the check box Automatically File System Errors and click on the start button.
• Restart the computer and let the check computer file system error .

Hope it will hide the system reserved partition.

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How to Hide System Reserved Partition with 3 Simple Ways?

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.

Why need to hide system reserved partition?

System Reserved partition is essential which contains the Boot Manager, Boot Configuration Data and Startup files used for Bitlocker Drive Encryption. It is a good idea to hide System Reserved partition if you want others to stay away from it. Also, hide System Reserved partition can ensure its integrity and ensure successful system factory restoration after accidents.

How to hide System Reserved partition?

There are 3 methods of hiding reserved partition in Windows 10, 8, 7.

Using DISKPART

Diskpart is a command-line disk partitioning utility which can help you hide System Reserved partition.

Step 1. Start an Administrator Command Prompt.

Step 2. Type diskpart at the prompt and press Enter.

Step 3. Type list disk and press Enter.

Step 4. Type select disk 0 and press Enter (make sure to use the correct disk number for your system).

Step 5. Type list partition and press Enter. The System Reserved partition should show up in the list (e.g. Primary, 100 MB). Partition 1 will be used in this example.

Step 6. Type select partition 1 and press Enter.

Step 7. Type detail partition and press Enter. Assuming the correct partition has been selected, it should show Type:07, Hidden: No Active: No.

Important:  Make sure you have selected the correct partition before proceeding.

Step 8. Type set id=17 and press Enter. This will change the partition type from 0x07 (Hidden NTFS) to 0x17 (NTFS) and unhide it.

Step 9. Type detail partition and press Enter. Verify that the partition is now 17 and hidden. Volume details and the partition's label should be displayed.

Using Disk Management

You can also remove the drive letter from System Reserved partition. Once the drive letter is removed, the partition will not be shown in File Explorer.

Step 1. Press W + R to bring out the Run dialogue. In the dialogue, type diskmgmt.msc  and press Enter. It will open Disk Management.

Step 2. Right click on the drive you want to hide and select the option “ Change drive letter and paths .”

Step 3. Click on the button “ Remove ” in order to remove the assigned drive letter. Then click Yes as the warning windows displays.

Step 4. With the above action, you have successfully hidden the drive or partition on your Windows system. Then, the System Reserved partition will be invisible in the File Explorer.

Using AOMEI Partition Assistant

Disk Management and Diskpart.exe are not familiar with most people, you can turn to thid-party partition manager- AOMEI Partition Assistant . It is able to hide and unhide a partition on a hard drive on a user-friendly interface. It makes the operation easily and quickly. Here are the detailed steps:

Step 1. Install and open AOMEI Partition Assistant and open it. Right click on the partition which you want to hide, choose Advanced -> Hide Partition .

Step 2. You will get a warning as shown in the following screenshot - “Hiding this partition may cause its drive letters to be changed. Would you like to hide the partition? ”. Click OK to continue.

Step 3. Click Apply to execute the operation. After that, the System Reserved partition will be invisible to others.

1. The hidden partition is unavailable for use until you unhide it.

2. After you unhide a partition, Windows will randomly reallocate a new drive letter to that partition. This means you may get a drive letter which is different from its original one.

3. Unhide a partition will cause its related shortcuts invalid.

4. If one day you want to use it again, simply unhide the partition .

With the 3 methods, you can easily and securely hide the System Reserved partition. Some users reported that system reserved drive suddenly appeared after their upgrade their system somtimes. So if you have the same problem, you can try these methods again.

 In addition, AOMEI Partition Assistant has many powerful features that diskpart and Disk Management don’t have. For example, you can create bootable media with Make Bootable Media feature in case the computer cannot boot. Migrate OS to SSD feature allows you to clone system to SSD without reinstalling Windows.

Free Partition Manager

• Resize and Move Partition
• System/Disk Clone
• Convert MBR/GPT Disk
• Check & Fix Disk Errors

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Have your problem been solved? If not, please input query in the search box below.

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System Reserved Partition on a Wrong Drive – How to Move It?

Find the System Reserved partition on a wrong drive after installing Windows? Learn how to move the System Reserved partition to the desired drive easily in this article.

By Lily / Updated on July 10, 2023

The issue: System Reserved partition on a wrong drive

When you install Windows 7/8/10 on a clean disk, a special partition named System Reserved partition will be created. The System Reserved partition holds the Boot Configuration Database, Boot Manager Code, Windows Recovery Environment and reserves space for the startup files which may be required by BitLocker.

You can only see the System Reserved partition in Disk Management or similar program because it has no drive letter. Usually it locates before the system partition (normally the C: drive). However, some users find the System Reserved partition is on a wrong drive. It happens when they install Windows with more than one hard drive attached to the computer. Then,  how to deal with Windows 7/8/10 System Reserved partition on a wrong drive? Just keep reading.

How to resolve System Reserved partition is on another drive?

If you encounter the System Reserved partition is on another drive, you can move it to the drive you want with two methods described below:

Method 1: move the System Reserved partition using Disk Management

By “move” here I mean to create a new System Reserved partition and then delete the old one. Since the System Reserved partition contains boot files, you may suffer from boot failure after moving it. To get prepared for potential boot error, you can create a system repair disc in advance. Then, follow the instructions below:

• Press the Win+R keys to open Run, type diskmgmt.msc in Run, and click on OK to open Disk Management.
• Find the disk where you want to have the System Reserved partition. Right click on the unallocated space on the disk and select New Simple Volume . If there is no unallocated space, you can get some by deleting an existing partition or shrinking it.

• Follow New Simple Volume Wizard to specify volume size, assign drive letter or path and format partition step by step.

Tips: ● The size of the System Reserved partition is 100 MB on Windows 7, 350 MB on Windows 8, and 500 MB on Windows 10. ● You can label the new partition “System Reserved” when formatting the partition.

• Assign a drive letter to the original System Reserved partition to make it shown in File Explorer. Copy everything from the old System Reserved partition to the newly created partition. It should include Boot folder, bootmgr and BOOTSECT.BAK.
• Remove the drive letter from the new System Reserved partition and then make the partition bootable .
• Restart your computer to see if it can boot successfully. If it boots successfully, you can safely remove the old System Reserved partition; if not, you can use the Windows system repair disc you prepared to perform Startup Repair.

As you see, it takes a lot of efforts to create a new System Reserved partition, especially for those who are unfamiliar with Disk Management. Is there a simpler way to move the System Reserved partition to the desired drive? Please read on.

Method 2: move the System Reserved partition via a handy utility

Instead of creating a new System Reserved partition, I’ll tell you how to copy the original System Reserved partition to the drive you want here. What you need is the best disk cloning software AOMEI Backupper Professional . 

✭ It enables you to clone the entire disk or copy partition to another drive . You can also clone OS only via  System Clone . ✭ It allows you to create image backups for the system, disk, partition, or files. You can even restore system to another computer with different hardware via  dissimilar hardware restore . ✭ All Windows PC operating systems like Windows 11/10/8.1/8/7/Vista/XP are supported.

Follow the steps below to copy the old System Reserved partition to another drive via AOMEI Backupper:

Step 1. Install and launch AOMEI Backupper. Click “ Clone ” on the left pane and select “ Partition Clone ”.

Step 2. Select the old System Reserved partition as the source partition and click “ Next ”.

Step 3. Select the unallocated space on this disk which you want to move the System Reserved partition to and click “ Next ”.

Step 4. In the Operation Summary page, click “ Edit Partition ”. In the pop-up window, the destination partition is set as “Primary Partition” by default so as to make it bootable later. Set the drive letter as “None” and adjust the partition size based on your need. Then, click “ OK ” to save your settings.

Step 5. Confirm the operation and click “ Start Clone ”.

Notes: ● Sector by sector clone : it will clone every sector on the source partition no matter it is used or not, thus costing more time. It requires the destination partition to be equal to or larger than the source partition. ● SSD Alignment : it will improve the performance of the destination SSD. You should check this option if you are moving the System Reserved partition to an SSD.

Step 6. After the cloning process is finished, open Disk Management, right click on the new System Reserved partition and select Properties . Name it “System Reserved” under the General tab.

Step 7. Set the new System Reserved partition as active and restart the computer to check if it can boot successfully as mentioned in Method 1. Delete the old System Reserved partition if there’s no problem occurring.

Beisde moving system reserved partition, this software also applies to  migrate Windows 10 to M.2 SSD , clone M.2 SSD to M.2 SSD, clone SSD to larger SSD, etc.

When you find the System Reserved partition is on a wrong drive, you can move it to the drive you want with two methods provided in this article. Apart from Partition Clone function, AOMEI Backupper can also help you clone hard drive from Command Prompt and run DoD hard drive wipe . Don’t hesitate to give it a try and share this article with your friends if you think it's helpful!

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How to Hide System Reserved Partition Windows 10? [3 Simple Ways]

Many users want to hide system reserved partition Windows 10, but some of them don’t know how to do that or encounter some issues. Don’t worry. This post of MiniTool shows you how to hide system reserved partition and provides some extra tips.

A lot of users find the system reserved partition in Windows File Explorer, but they don’t have to access the partition frequently. So, many of them want to hide that partition. However, some users don’t know how to hide system reserved partition Windows 10 or encounter issues after hiding it. Here is a true example from the superuser forum:

How do I hide the System Reserved partition from Windows Explorer? It’s annoying to see it as a partition on my computer. I will never need to access it from there, why would I need the entry then? PS: I just want to hide it, not delete it. https://superuser.com/questions/395634/how-do-i-hide-the-system-reserved-partition

What’s System Reserved Partition

System reserved partition is an important partition that contains the Boot Manager code, Startup files used for BitLocker Drive Encryption, and Boot configuration database. In Windows 10, the Recovery Environment data is also stored in the partition. This drive is usually located before the system partition (normally the C: drive) when you clean install Windows 10 .

Windows usually doesn’t assign a drive letter to the system reserved partition, so you only can see it when opening Disk Management or other similar utility. Of course, if you assigned a drive letter to the system reserved partition accidentally, you will see it in Windows Explorer. That’s also why some people find the partition appeared in File Explorer and want to hide it.

Many users accidentally deleted user folders due to some reason. How to recover deleted user profile Windows 10? This post provides 3 ways to undelete profile.

How to Hide System Reserved Partition Windows 10

There are 3 simple ways to perform the Windows 10 hide system reserved partition operation. Let’s start trying.

# 1. Use Diskpart

Diskpart is a command-line partition management tool that can be used to manage partitions of hard disks and other storage devices like USB. Here you can use it to hide system reserved drive. To do so, follow the steps below:

Step 1. Type diskpart in the Search box, and then right-click the diskpart app from the top result and select Run as administrator . Click on Yes in the UAC confirmation window when you are prompted to grant the admin right.

Step 2. In the elevated command prompt window, type the following commands in order and hit Enter after each one.

• select disk * (replace the * with the disk number that contains the system reserved partition)
• list partition
• select partition * (replace the * with the drive letter of your system reserved partition)
• detail partition (if you select the correct partition, it should display as Type:07 , Hidden: No , Active: No )
• set id=17 (this command will change your partition type from 07 =Unhidden NTFS partition to 17= hidden NTFS partition)
• detail partition

Now, you should find the system reserved partition status shows as Hidden: Yes . Also, you can press Win + E keys to open File Explorer and see if the partition still appears.

# 2. Use Disk Management

As pointed out above, the system reserved partition shows up in File Explorer mainly because you assigned a drive letter to it. So, another method on how to hide system reserved partition is to remove the drive letter. Let’s see how to remove a drive letter using Disk Management.

Step 1. Press Win + R keys to open the Run dialog box, and then type diskmgmt.msc and press Enter to open Disk Management.

Step 2. In the pop-up window, right-click the system reserved partition that you want to hide and select Change drive letter and paths from the context menu.

Step 3. Click on Remove in the pop-up dialog box to remove the assigned drive letter.

Step 4. Click on Yes in the warning window to confirm this operation.

Now, you can open the File Explorer and see if the system reserved partition has been hidden.

# 3. Use MiniTool Partition Wizard

Although the above Windows built-in tools can help you hide system reserved Windows 10, you need to either remove the drive letter or change the partition type ID. Moreover, you will receive the warning message that the drive might be in use or programs that rely on the drive letter might not run correctly, which makes you feel panic.

Is there a way to hide recovery partition Windows 10 directly? MiniTool Partition Wizard can help you do that easily. It is a multifunctional partition manager that can hide/unhide partition , extend/resize partition, convert NTFS to FAT without data loss , migrate OS, convert MBR to GPT , etc.

Let’s see how to hide system reserved Windows 10 using MiniTool Partition Wizard.

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

Step 1. Launch the MiniTool program to enter its main interface.

Step 2. Select the system reserved partition from the disk map and click on Hide Partition from the left action pane.

Step 3. Click on Apply to execute the pending operation. Once completed, you can check if the partition is hidden in File Explorer.

How to hide system reserved Windows 10? The 3 simple ways have been illustrated. You can choose one which works best for you.

Extra Tips: Fix Related Issues After Hiding System Reserved Partition

Sometimes, however, you may encounter some issues after or when hiding the system reserved partition. After reading lots of user reports, we find there are 2 main issues with the Windows 10 hide system reserved partition. Don’t worry. We will provide corresponding solutions here.

Case 1. Hidden System Reserved Partition Still Shows in File Explorer

The first and most common issue is that no driver letter was assigned to the hidden system reserved partition but in Windows Explorer, it still has a drive letter. If you haven’t removed the drive letter successfully or you re-assign a drive letter to the hidden partition accidentally, you may encounter this situation.

In this case, you can run Diskpart.exe to remove the drive letter of the system reserved partition again.

Step 1. Type diskpart in the Search box, and then right-click the diskpart app from the top result and select Run as administrator .

Step 2. Now, type the following commands in order and press Enter after each one. Here make sure you select the correct disk and partition.

• select Disk 0
• select partition 1 (1 represents the partition that you want to remove its driver letter)

Case 2. Other Partitions Missing from File Explorer

Some other people reported that removing the drive letter for the system reserved partition can cause other partitions on that drive missing from Windows Explorer. This may occur when you remove the drive letter for the incorrect partition. To avoid this situation, you can tweak a registry value to maintain the drive letter but hide the drive. For that:

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

Step 1. Open the Run dialog box, and then type regedit in it and hit Enter . Click on Yes in the UAC window to access Registry Editor.

Step 2. Go to the following path via the left navigation bar. Or, you can press Ctrl + F key to open the Find what box, and then copy and paste the following path in the box.

HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionPoliciesExplorer

Step 3. With the Explorer folder selected in the left panel, right-click any empty area on the right pane and select New > DWORD (32-bit) Value . Then name the newly created DWORD value NoDrives and hit Enter .

Step 4. Double click the NoDrives value to open it and select Decimal under the Base section.

Step 5. Enter the decimal number that represents the drive letter you want to hide into the Value data box. In my case, the drive letter of the system reserved partition is H and I should type 128 in it to hide the drive. If you want to hide more partitions, you need to enter the sum of the decimal numbers. For instance, if you want to hide drive E and drive F at the same time, you can enter 48.

Step 6. Click on OK to save changes and close Registry Editor.

Now, you can open File Explorer and see if hide the partition successfully.

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This post mainly focuses on how to hide system reserved partition Windows 10. To achieve that, you can remove the drive letter of the partition using Diskpart or Disk Management. Of course, we highly recommend you use MiniTool Partition Wizard which can hide a partition directly with just a few clicks.

If you have any better ideas on this subject, please write them down in the comment area. For any questions or difficulties in using the MiniTool software, you can contact us via [email protected] .

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