Updated by

Tracy King

Last updated on April 19, 2024

If you accidentally delete the System Reserved partition in Windows 10, it may lead to computer boot issues or OS update problems (like the “Unable to update System Reserved Partition” error when installing Windows 11/10), as the System Reserved and System partitions work together during the boot process. How to fix this issue? Don't worry.

4 Ways to Recover from the System Reserved Partition

What to do if the System Reserved Partition is deleted? Here, you will find effective ways to recover deleted System Reserved Partition as well as fix boot errors on your computer.

Recover System Reserved Partition

When the System Reserved partition is deleted, you may encounter boot problems, inability to perform System Restore, data loss, and system repair issues, etc. What should I do if my System Reserved partition is deleted? Let's find out:

    1. First, turn off your computer and close all running programs, saving any edited documents. 2. Next, make sure to back up all important files and data on your computer to an external storage device. 3. Lastly, use a reliable method to restore the deleted System Reserved Partition.
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Method 1: Use the Partition Master tool with a WinPE bootable disk

When you can't boot Windows 11/10 due to the deletion of the system reserved partition, an Emergency Boot Disk might come in handy. You should create the disk before you make the mistake, or you can create the boot disk on another healthy computer.

Then, how to create a WinPE bootable USB to recover and fix the System Reserved Partition in Windows 11/10? A professional Windows partition manager - AOMEI Partition Assistant can help you easily create a WinPE bootable disk.

With a bootable disk, you can restart your computer and access the “Partition Recovery” feature of the partition tool, and with just a few clicks, restore the deleted system reserved partition.

Step 1. To create the bootable MiniTool Partition Wizard disc, you need to have a storage medium like a USB drive, flash drive, or CD/DVD disc. Connect the drive correctly to your computer.

Step 2. Launch Partition Master and look for the “Bootable Media” feature on the left. Click it.

Step 3: If you have a drive available, you can choose to create the USB or CD/DVD. If you don't have a blank media device, you can also save the ISO file to your hard disk and burn it to a medium later. Click "Create" after selecting your preference to start the creation process.

    Review the warning, and then click Yes.

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Step 4: When the process is over, you'll see a popup asking you whether you want to restart your computer from the bootable USB.

  • Restart Now: This means you want to restart your computer immediately and boot into the live media tool, which allows you to manage disk partitions without an operating system.
  • Finish: This means you do not want to restart your current computer but instead use the bootable USB device on a new one.
Select to boot from the bootable USB

Note: To use the bootable drive on a new computer, you'll need to restart the target computer and press F2/F8/Del to enter BIOS, then set the USB bootable drive as the first boot device.

Wait patiently, and your computer will boot from the USB boot media and load the WinPE tool desktop automatically.

Enter the WinPE desktop

After creating the WinPE boot disk with the above steps, you can proceed to recover the deleted System Reserved Partition with the same tutorial as in Method 2.

Method 2: Use Partition Manager Software

If your computer boots normally after deleting the System Reserved Partition but you encounter other usage issues and need to recover the deleted partition along with its data, you can directly install and use the Partition Master tool on Windows 11/10 to restore the lost partition. This disk management utility allows you to efficiently recover lost partitions, including the accidentally deleted System Reserved Partition, from unallocated space.

Please follow the instructions in the video and text tutorial below to quickly recover the system reserved partition:

Step 1. Launch Partition Master and click “Partition Recovery”. Select the hard drive which contains the lost partition, then click “New Scan”.

Step 1 of Partition Recovery

Step 2: Be patient and wait for the software to complete the “Quick Scan” and “Deep Scan.” It will mark your deleted partition as “Lost.” Select the lost partition and click “Recover.”

Step 2 - Partition Recovery

You can also double-click on the partition you want to search and preview its content, then click “OK” to confirm.

Step 3 - Partition Recovery

Step 3: Wait patiently for the process to finish, then click “Finish”.

Step 4 of Partition Recovery

When finished, you can restart your computer from the system partition and resume using it. You have recovered the reserved partition, but you cannot use it for System Restore, System Repair, or other tasks.

If you like the above features of Partition Master, please share online to help more friends to instantly recover their deleted or lost partition now.

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Method 3: Through CMD (Command Prompt)

Another effective method that advanced Windows users can try is using CMD. You can rebuild or repair the deleted System Reserved Partition through the CMD command line. The process is somewhat complex, so make sure to enter each command correctly:

1. Boot your computer using the Windows 11/10/8/7 Installation Media or Install Disc, and then press Shift + F10;
2. At the Command Prompt, type in the following command: bootrec /fixmbr + Enter

If you get a “no such element” error message, you may need to use the disk partitions command first to set the boot partition as active.

3. Type the following command at the Command Prompt:

    1. diskpart
    2. select disk 0
    3. list partition
    4. select partition #
    Here, the "#" represents a specific partition number that needs to be replaced with the actual partition number.

Note: Select the System Reserved partition (if you have one) or the Windows operating system partition.

    • active
    • quit

Set partition as active

4. Type bootrec /fixboot and press Enter. 5. Type bootrec /rebuildbcd and press Enter.

After going through the above steps, you can restart your computer and continue using it as normal – the deleted System Reserved Partition will be restored.

Method 4: Utilize One-on-One Remote Assistance Services If you require more direct assistance, consider professional one-on-one remote support services. This typically involves a technician connecting to your device via the internet to address the issue directly. Please note that this may incur a fee, and it's essential to ensure you choose a reputable service provider. Keep in mind that this is not a step-by-step procedure but rather a suggested solution. When seeking remote assistance, adhere to best security practices to mitigate any potential cybersecurity risks.

If all else fails, don't give up. The last resort for getting it working is to use the one-on-one remote assistance tool.

The "Tools 1-on-1 Remote Assistance" service lets you schedule a dedicated Technical Support Engineer for a remote desktop session. During this session, you'll receive personalized assistance, such as using the tool software to achieve your objectives, setting up tailored backup plans, resolving Windows errors or system boot issues, and more.

Should you need to recover the System Reserved Partition or address any system boot-up issues, you can reach out to our professionals via email or live chat for maximum assistance.

Also, don't forget to share this troubleshooting guide online to help your friends fix the same issue.

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Conclusions

On this page, we've gathered four methods that can help Windows users easily recover the lost or deleted System Reserved Partition on their own. For the most effective and reliable method, we recommend you follow the instructions below:

    • For bootable computers, you can directly recover the partition with Partition Master using Method 2. • For unbootable computers, Method 1 in combination with Method 2 can provide comprehensive assistance.

Aside from helping to solve this issue, Partition Master is also well-known for its partition management, with the following disk management features:

    • Resize/Move partitions (the Pro version allows you to move space from D drive to C drive), create, format, delete, and merge partitions
    • Copy and clone an entire disk to another disk even if the target partition is smaller than the source
    • Convert a logical partition to primary or primary to logical, FAT to NTFS partition, and convert MBR disk to GPT, or vice versa
    • Completely wipe all data on a hard drive to prevent information leakage or recovery

Frequently Asked Questions on Fixing Reserved System Partition in Windows 11/10 (UTF-8)

Below are more questions about the Recovery Partition on Windows 11/10. If you have any of these issues, you can find the fixes here.

How to Resize System Reserved Partition?

Step 1. Boot your Windows PC using the Windows installation media.

Step 2. On the first installation screen, press Shift + F10 keys to open the command prompt.

Step 3. Enter the following commands, pressing Enter after each one:

diskpart
select disk 0
list partition
select partition # (Choose the "System Reserved" partition if present, or the Windows operating system partition)
active
exit

Step 4: Type bootrec /fixboot and press Enter.

Step 5. Type bootrec /rebuildbcd and press Enter.

Step 6. Close the Command Prompt, and then shut down. Try booting from the drive you just repaired.

What will happen if I format the system reserved partition?

You can format the System Reserved Partition on your computer for a clean installation of Windows 11/10/8/7. This partition will be created again when you set up the first partition for installing Windows.

Since the System Reserved Partition is quite small, deleting it won't free up a significant amount of space. Moreover, since the boot files are stored in this partition, removing it can prevent your computer from starting up properly.

What is the "System Reserved Partition" in Windows 11/10?

The System Reserved Partition is a section of the hard disk that Windows sets aside during its initial management of the drive to store system boot files or Windows startup files. For security purposes, when installing Windows 7 (or later versions), if you partition the hard disk using the disc's partition tool, the system will by default allocate some space (100-200 MB) without assigning a drive letter, which is used to store system boot files (i.e., special purpose files that need to be read first when the computer starts up).

How to Fix the System Reserved Partition in Windows 11/10?

The easiest way to recreate or fix the System Reserved Partition in Windows 11/10 is by using a professional partition management tool, such as the Partition Master Tool. With this utility, you can easily recover the System Reserved Partition that was accidentally deleted on a bootable disk in Windows 11/10/8/7 or WinPE.

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