How to repair unmounted boot disks - blue screen

July 05, 2020 by Brayden Callaghan


TIP: Click on this link to repair Windows errors and increase system performance.

If you have a non-mountable boot disk - a blue screen, the following guide will help you.

An unavailable boot volume error can be caused by the following reasons:
  • Damage to files on your hard drive.
  • Damaged system files.
  • RAM is damaged.
  • The hard disk is damaged.
  • Incorrectly configured BIOS (this rarely happens if you yourself did not change the BIOS)
  • Important Windows update.



A “boot volume” is a partition on your hard drive where boot files and the Windows system are stored. If you see a “Unmountable Boot Volume” error, you cannot access Windows, and you see a blue screen error (BSoD).

Therefore, you cannot fix this error like other less serious problems. Fortunately, there are ways that you can use to solve this problem, as described below.

What Is The "Unmountable Boot Volume" Error?

How do I fix Unmountable boot volume Windows XP?

Hotfix # 1: Restoring Hard Drive Controller Drivers Using System Restore
  1. Insert the Windows installation DVD into your PC's CD-ROM drive.
  2. Turn off the computer completely and make sure that it is completely turned off.
  3. Turn on your computer,
  4. Press any key when “Press any key to boot from a CD or DVD”.

The Unmountable Boot Volume (BSOD) problem appears on the blue screen of death. These types of errors are known to be unexpected and destructive because they are difficult to fix and can occur at almost any time. You do not need to worry if you recorded your progress before the crash. Make sure you always check often!

unmountable boot disk - blue screen

Although the new version of the blue screen in Windows 10 is more user-friendly, it still presents a lot of problems. The sad emoticon at the top of the screen has become a bit of an Internet gadget, but this does not take BSoD seriously.

Losing files in the event of a computer failure is one thing, but worse, the inability to get accessn to your system. This is an “Unmountable Boot Volume” error. As soon as Windows 10 starts, you will be greeted by a blue screen of early death.

This means that you do not have regular access to troubleshooting tools. We are here to help you! You can go directly to the solutions by clicking here, or read some possible reasons in the next section.

Causes Of The “Startup Volume Not Used” Error?

Many problems with Windows 10 have several possible causes, and this is no exception. For this reason, we must study all the possible reasons that were known at the time of writing.

Thanks to the active and unified user base of Windows 10, we were able to create a list of the most common causes of the Unmountable Boot Volume error.

How To Fix An "unused Boot Volume"

After exploring some of the possible causes, it's time to get started and start troubleshooting. There are more ways to fix this error than there are reasons - you need to find one that works.

If you follow our guide, you can fix the “Unmountable Boot Volume” error in yourWindows 10. You are minutes away from restoring and using your computer, as if nothing had happened!

Method 1: Restart Your Computer

June 2021 Update:

We now suggest using this software program for your issue. Also, Reimage repairs typical computer system errors, defends you from file loss, malicious software, computer system failures and optimizes your Pc for maximum performance. You can fix your Pc challenges swiftly and prevent others from happening by using this software:

  • Step 1 : Download and install Computer Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista - Microsoft Certified).
  • Step 2 : Click on “Begin Scan” to uncover Pc registry problems that may be causing Pc difficulties.
  • Step 3 : Click “Repair All” to fix all errors.


Indeed, Windows 10, like all other operating systems, is experiencing temporary problems. To solve this problem, the system can detect the problem and automatically recover the computer the next time it starts.

Try and check to see if restarting your computer leads to another “unused boot disk” error. If so, continue with the following methods to permanently resolve the error.

Method 2: Use Automatic Recovery

You can use the Windows 10 installation media to access many recovery tools, even if you do not plan to reinstall the system yourself. One of them is an automatic recovery tool that can be used to troubleshoot startup problems.

Method 3: Fix The Master Boot Record

You can fix the Unmountable Boot Volume error by simply restoring the basicsnew boot record. All you need is the Windows 10 installation media and our instructions below.

Method 4: Run The Chkdsk Command

Using the “Chkdsk” command, also called the “Disk Verification Command”, you can perform quick troubleshooting from the command line. Here are all the steps to follow.

Method 5: Run A System File Check

System File Checker, also called SFC Scan, is a useful tool in Windows. It is able to solve a wide variety of problems, and users also do not have a solution for Unmountable Boot Volume.

Method 6: Reinstall Windows 10

If none of the above methods work for you, we recommend reinstalling Windows 10 as a whole. If you do not have serious hardware problems, this should fix the “unusable boot volume” error.

We hope you were able to use this guide to fix the Unmountable Boot Volume error. Enjoy your computer properly! If this problem recurs in the future, you can return to our article and correct it again using our methods.Code.

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How do I bypass the blue screen of death?

Fixed blue screen in safe mode
  1. On the selection screen, select Troubleshoot.
  2. Click on advanced options.
  3. Click Launch Settings.
  4. Click the Reboot button.
  5. After the computer restarts, press the F4 key or the 4 key to activate safe mode.



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