What Is the Unmountable Boot Volume Error? To start with boot volume, this is the partition of your hard drive that holds Windows. This error occurs when your computer can’t load Windows properly, resulting in a blue screen of death. It usually occurs due to a damaged file system or corrupted Windows files.
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What to do?
There are several ways you may take to correct this kind of error based on your booting system and corrupted files in the bootstrap programs, and below are the options you may follow in steps.
1.Do not attempt to do anything.
- While you all of a sudden you encounter such an error, “Unmountable Boot Volume”, doing nothing about it should be your first choice step rather than causing more damage. Just leave your PC for 15 to 20 minutes.
- Once your PC reboots and starts automatic repair, you’ll get a black screen with the mouse cursor. In the range of duration specified above, and after that, you’ll be redirected to the Windows login screen. If this does not happen, then you will have to proceed to step two.
2.Do a startup repair from a CD
- Boot your PC from windows 10 CD or a USB drive, you can download a free Windows 10 disc image from Microsoft’s official website if you don’t have Windows 10 media source.
- Choose the Repair your computer option located at the bottom left corner of the screen.
- Select Troubleshoot, proceed to Advanced options, and then click Automatic Repair.
- Click Next and select the OS you want to repair.
3. Try to Fix the master boot Record
- Boot your PC from a recovery media source as an alternative in step 2 above
- Choose the Repair your computer option located at the bottom left corner of the screen.
- Select Troubleshoot, proceed to Advanced options, and then click Command Prompt.
- In the command prompt, type bootrec /fixboot and hit Enter.
1.Run the Ckhdsk Command
After and automatic repair and you realize that MBR repair didn’t solve the problem, then u=you should try Chkdsk, and important command prompt tool which helps you check for any hard drive errors that most of the time cause the problem in question. Below are the steps you will follow in how to use Chkdsk command.
- Open a Command Prompt from the recovery menu, then enter the following command:
- chkdsk /r c:
- The /r flag locates any bad sectors on your disk and fixes those errors. If you don’t include this, Chkdsk will simply report errors it finds. You need to include c: so the operation scans your Windows partition (the most common location for it). Replace c: with d: or another letter if you’ve moved yours somewhere else.
- Chkdsk may ask you to run next time the system restarts. If it does, enter Y for yes and reboot to start it.
- This can take some time, so you may have to wait a bit. Once it’s done, reboot again and see if the issue has cleared up.
2. Use SFC Scan
For the final Command Prompt solution, you can try another important utility. SFC, or System File Checker, looks for corrupted Windows system files and attempts to fix them. If none of the above has fixed your issue yet, this is worth a try.
- Open a Command Prompt on your recovery drive again and enter the following command:
- sfc /scannow
- Wait until the process completes. It will tell you if it fixed anything. Like the other commands, reboot and try to load into Windows again.
2.Test your hardware and install
- If you’ve completed all the above and continue to see an unmountable boot volume error every time you boot, your problem is deeper. You have two options for further solutions.
- First, you may have a hardware issue. Your hard drive could be corrupted, dying, or have a faulty connection. If you’re confident open your computer and check to make sure the hard drive cable is securely connected. Sometimes faulty RAM can also cause this problem, so make sure the RAM is properly seated.
- If you check the connections and everything looks OK, you should do a
diagnosis test to determine if a component is dying. Replacing it should fix your issue, but you’ll need to talk to an experienced computer technician if you can’t swap the components yourself. - If each and every other
steps fail completely, boot from your recovery media source and proceed to reinstalling the OS.