How to Rebuild the System Reserved Partition in Windows 10/11

The system reserved partition is a crucial component of your Windows operating system, responsible for storing essential boot files and ensuring a smooth startup process. However, if this partition is accidentally deleted or corrupted, it can lead to serious boot issues and prevent your computer from booting properly. In this comprehensive guide, we’ll walk you through the steps to rebuild the system reserved partition in Windows 10 and 11, helping you restore your computer’s functionality and get back on track.

Method 1: Rebuild System Partition via Command Prompt

One of the most effective ways to rebuild the system reserved partition is by using the Command Prompt. This method requires you to have a Windows installation media, such as a DVD or USB drive. Follow these steps:

1. Boot your Windows-based computer using the Windows installation media.
2. On the first installation screen, press “Shift F10” keys to bring up the Command Prompt.
3. In the Command Prompt, enter the following commands, pressing “Enter” after each one:
   • bootrec /fixmbr
   • diskpart
   • select disk 0
   • list partition
   • select partition # (Select the “System Reserved” partition or the Windows OS partition)
   • active
   • exit
4. Type bootrec /fixboot and press “Enter”.
5. Type bootrec /rebuildbcd and press “Enter”.
6. Exit the Command Prompt and shut down your computer.
7. Try booting from the drive that has been repaired.

If you encounter the error message “BOOTMGR is missing” during the boot process, you’ll need to copy the bootmgr file from the Windows installation media to your Windows OS partition root directory. Follow these additional steps:

1. Enter the Command Prompt again in the Windows installation media.
2. Run the following commands:
   • diskpart
   • list volume (Take note of the volume letters and remember which one stands for DVD-ROM)
   • exit
   • copy n:\bootmgr C: (Replace “n” with the letter of your DVD-ROM drive)
3. Exit the Command Prompt and try booting your computer again.

Method 2: Use Partition Recovery Tools

If you prefer a more user-friendly approach, you can use partition recovery tools to restore the deleted system reserved partition. One such tool is MiniTool Partition Wizard, which offers a “Partition Recovery” feature specifically designed for this purpose.

Here’s how to use MiniTool Partition Wizard to recover the deleted system reserved partition:

1. Create a bootable media using the “Bootable Media Builder” feature in MiniTool Partition Wizard.
2. Boot your computer from the bootable media you just created.
3. In MiniTool Partition Wizard, select the system disk that used to have the deleted system reserved partition.
4. Choose “Partition Recovery” from the left pane or the main window.
5. Follow the on-screen instructions to scan for the deleted partition and recover it.

Remember, this method is only effective if you haven’t made any further changes to the primary drive after the deletion. If you have, the chances of successful recovery may be lower.

By following these methods, you should be able to rebuild or recover the deleted system reserved partition in Windows 10 or 11. Keep in mind that data loss may occur during the process, so it’s always recommended to have a backup of your important files before attempting any partition-related operations.