If you’ve recently upgraded your OS to Windows 10, you might’ve run into a BSOD error called Unmountable_Boot_Volume. This issue, like any of the other BSOD errors, is really frustrating as it doesn’t let you get into windows, which makes it impossible for you to troubleshoot it like other windows errors. However here you can learn everything you need to in order to resolve it.

First, know that “Boot Volume” is the section in your hard drive where the Windows system and boot files are placed. 

When your computer cannot load the Windows files, this error occurs. On a blue screen, an error message that reads ” Your PC ran into a problem and needs to restart. We’re just collecting some error information, then we’ll restart for you. ( ___% complete). UNMOUNTABLE_BOOT_VOLUME “.


UNMOUNTABLE_BOOT_VOLUME occurs when there are problems with the hard drive. This usually happens after a recent windows upgrade but there can be other reasons this can be attributed to. Some of them are enlisted below:

Corrupted files on Hard Disk

Corrupted System Files

Damaged RAM

Improperly Configured BIOS



Although UNMOUNTABLE_BOOT_VOLUME can be a pain, with just the right methods you can fix it without any complications. This might be just a temporary hiccup so the first thing you should do is let your system restart. If it doesn’t restart on its own, do it yourself. Once you do that, follow these methods:

Use Windows Automatic Repair

Using Windows Automatic Repair is the easiest way to solve this issue. Get a Windows 10 DVD or USB and follow these methods:

–Insert the Windows 10 Installation Media and power up your computer.

–Select the “Repair your Computer” option located at the bottom left corner of your computer screen.

–Choose Troubleshoot.

–From the Advanced Options, choose Startup Repair.

–Choose the OS you want to repair. In your case, it’s Windows 10.



Fix Master Boot Record

Master Boot Record (MBR) basically identifies where and how your operating system is stored. Issues with MBR can lead to this issue so follow these methods to resolve it:

–Follow the first three steps of the previous method.

–From the Advanced Options, choose Command Prompt.

–Type in bootrec /fixboot and hit enter.

Run the CHKDSK Command

If neither of the Automatic repair and MBR repair work, you should try chkdsk. It looks for and repairs errors in hard drives. 

Follow the first three steps of the Automatic Repair method, and then choose Command Prompt from the Advanced Menu

Type in ” chkdsk /r c: ” and hit enter. If you’re prompted asking if you want to check the disk the next time the computer restarts, select Y for Yes. Reboot the PC when the process is completed.

Re-install Windows 10

If none of the fixes mentioned above work, the only reasonable fix is to reinstall windows 10 on your computer. Insert the Windows 10 Installation Media and power up your computer. Choose your preferred language and then click on Install now on your computer.

We hope that these simple steps have helped you to Fix the Unmountable Boot Volume in Windows 10. 

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