How to Fix UNMOUNTABLE_BOOT_VOLUME Blue Screen Error in Windows 10

[attention-msg]

How to Fix UNMOUNTABLE_BOOT_VOLUME Blue Screen Error in Windows 10

One of the worst Blue Screen of Death errors you can encounter is the UNMOUNTABLE BOOT VOLUME BSOD on Windows 10. In this BSOD error, your computer won’t be able to properly boot. Meaning to say, even if you want to reinstall Windows, you won’t be able to back up your important files. Thus, it wouldn’t be really feasible to fix the system files and besides, reinstalling Windows 10 would take a lot of time, not to mention resources.

The UNMOUNTABLE BOOT VOLUME error is the kind of BSOD error that occurs if Windows is not able to access the volume that contains the boot files. Resolving this BSOD error won’t be easy but you will surely manage by following the suggestions laid out below but before you go on, make sure to create a System Restore Point.

Option 1 – Try checking the hardware

If you got the UNMOUNTABLE BOOT VOLUME BSOD error while trying to update your computer to a higher version of Windows, then you need to check if you have the compatible drivers for the disk controller as well as re-check the drive cabling and make sure that it is properly configured. And if you’re reusing either ATA-100 or ATA-66 drivers, ensure that you have an 80-connector cable and not the standard 40-connector IDE cable.

Option 2 – Try using Automatic Repair

You might also want to use Automatic Repair in fixing the BSOD error. To do so, follow the steps below.

  • You can start by creating and booting from a bootable Windows 10 USB Stick.
  • After that, click on Repair your computer located on the bottom left corner when you are on the initial Windows Startup screen.
  • Next, click on Troubleshoot and then on the other screen, click the Startup Repair option.
  • Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

Option 3 – Try fixing the Master Boot Record or MBR

The MBR or Master Boot Record is the location and is where the architecture of the operating system is installed. Thus, if either the location or the architecture is tampered, it can cause lots of BSOD errors like the UNMOUNTABLE BOOT VOLUME error.

  • Boot your computer into Safe mode with Networking using the Advanced startup options which you can access by tapping the F2 or F8 key. Once you’ve accessed the Advanced startup options.
  • After you access the Advanced Startup options, select Command Prompt by using the arrow keys on your keyboard.
  • After opening Command Prompt, execute the following command and hit Enter:

bootrec /fixboot

  • After entering the command, wait until the process is completed and then restart your computer to apply the changes made successfully.

Option 4 – Run the CHKDSK command to repair hard disk errors

Running the Chkdsk utility could help you fix the UNMOUNTABLE BOOT VOLUME error. If your hard drive has issues with integrity, the update will really fail as the system will think that it’s not healthy and that’s where the Chkdsk utility comes in. The Chkdsk utility repairs hard drive errors that might be causing the problem.

  • After you access the Advanced Startup options, select Command Prompt by using the arrow keys on your keyboard.
  • After opening Command Prompt, execute the following command and hit Enter:

chkdsk /f /r

  • The command you entered will scan the hard disk for any errors and will automatically fix it if it finds some issues. Wait for the process to be completed and then reboot your PC.

If the fixes given above didn’t help you in fixing the UNMOUNTABLE BOOT VOLUME error, worry not, as there is still another option that could help you. This option is Restoro, also known as a “one-click” solution. What makes Restoro better than other system utility tools or antivirus programs is that aside from helping you free up disk usage and memory in your computer, it helps you in fixing whatever issue your system is facing including BSOD errors. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For complete set of instructions in downloading and using it, refer to the steps below.

Perform a full system scan using Restoro. To do so, follow these steps:

  1. Turn on your computer. If it’s already on, you have to reboot it.
  2. After that, the BIOS screen will be displayed, but if Windows pops up instead, reboot your computer and try again. Once you’re on the BIOS screen, repeat pressing F8, by doing so the Advanced Option shows up.

  1. To navigate the Advanced Option use the arrow keys and select Safe Mode with Networking then hit
  2. Windows will now load the Safe Mode with Networking.
  3. Press and hold both R key and Windows key.

  1. If done correctly, the Windows Run Box will show up.
  2. Type in the URL address, https://errortools.com/download/restoro in the Run dialog box and then tap Enter or click OK.
  3. After that, it will download the program. Wait for the download to finish and then open the launcher to install the program.
  4. Once the installation process is completed, run Restoro to perform a full system scan.

  1. After the scan is completed click the “Fix, Clean & Optimize Now” button.