unmountable boot volume Windows 11


Dealing with unexpected errors on your computer can be frustrating, especially when they prevent you from accessing your system. One such error that Windows 11 users might encounter is the “Unmountable Boot Volume” error. In this guide, we’ll walk you through the steps to troubleshoot and resolve this issue, helping you get your system back up and running smoothly.

Understanding the Unmountable Boot Volume Error

The “Unmountable Boot Volume” error typically occurs when the operating system cannot access the partition that contains critical boot files. This can happen due to various reasons, including corrupt files, hardware issues, or problems with the file system. When this error occurs, your system might fail to boot, leading to frustration and worry.

Step 1: Enter Automatic Repair Mode

  1. Restart your computer: If you encounter the Unmountable Boot Volume error during startup, allow your computer to restart a couple of times. Windows will detect the issue and should enter Automatic Repair mode.
  2. Access Advanced Startup Options: If Automatic Repair doesn’t initiate, you can manually access the Advanced Startup Options by pressing the F11 key while the system is booting. From there, choose “Troubleshoot” > “Advanced options” > “Startup Repair.”

Step 2: Check and Repair Disk Errors

  1. Open Command Prompt: In the Advanced Startup Options, select “Command Prompt.”
  2. Run Check Disk (CHKDSK): Type chkdsk /r C: and press Enter. This command checks and repairs disk errors on the system drive. Allow the process to complete; it might take some time.

Step 3: Rebuild Boot Configuration Data (BCD)

  1. Access Command Prompt: Still in the Command Prompt, execute the following commands one by one:
unmountable boot volume Windows 11
  1. Restart your Computer: After executing these commands, restart your computer and check if the issue has been resolved.

Step 4: Check for System File Corruption

  1. Access Command Prompt: If the issue persists, return to the Command Prompt.
  2. Run System File Checker (SFC): Enter the command sfc /scannow and press Enter. This command will scan and repair corrupt system files.

Step 5: Use System Restore

  1. Access Advanced Startup Options: If none of the previous steps worked, return to the Advanced Startup Options and choose “System Restore.”
  2. Restore Point Selection: Select a restore point when your system was functioning correctly and follow the on-screen instructions.

Step 6: Perform a Clean Install

If all else fails, performing a clean install of Windows 11 might be your last option. Ensure you have a backup of your important data before proceeding.


Encountering the “Unmountable Boot Volume” error in Windows 11 can be stressful, but with the steps outlined in this guide, you can troubleshoot and resolve the issue on your own. Remember that it’s essential to follow the steps in order and back up your data before attempting any drastic solutions. If the problem persists, don’t hesitate to seek professional help. Your system’s health is worth the effort to get it up and running smoothly again.

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