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Summary :

unmountable boot volume

You may encounter an issue unmountable boot volume when you are trying to boot your computer. But do you know what the reason is of this problem and how to fix unmountable boot volume Windows 10 problem? This post will list 6 solutions.

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Issue of Unmountable Boot Volume

When you boot your computer, you may encounter a problem Blue Screen of Death and one of the errors is the unmountable boot volume. And the detailed information is shown as follows:

Your PC ran into a problem and needs to restart. We’ll restart for you. If you’d like to know more, you can search online later for this error: UNMOUNTABLE_BOOT_VOLUME.

the unmountable boot volume error

As a matter of fact, there are many reasons leading to the issue of unmountable boot volume. For example:

  • A corrupted file system
  • Damaged hard drive
  • Damaged RAM
  • Corrupted files on hard disk
  • More…

Of course, apart from the above causes, other reasons may also give rise to the problem. Meanwhile, do you know how to fix unmountable boot volume Windows 10? If no, you come to the right place. In the following part, we will demonstrate how to fix the stop code unmountable boot volume and you can try these methods one by one.

Restart Your Computer

In the beginning, we will show you the first unmountable boot volume Windows 10 fix. In order to solve the issue unmountable boot volume, you can try restarting your computer. Sometimes, Windows runs into a temporary hiccup, restarting computer will solve it and you never encounter the issue unmountable boot volume again.

So before going to the following solutions, try rebooting computer firstly.

Use Windows 10 Automatic Repair

If you encounter the issue unmountable boot volume Windows 10, you can try to use Automatic Repair of Windows 10 to fix the problem.

And since your computer can’t boot normally, you need to use a Windows installation disc or a bootable USB drive to boot your computer. Thus, you can click here to download the Microsoft Media Creation Tool and launch it to create an installation disc.

windows 10 media creation tool thumbnail
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Don't know what Windows 10 Media Creation Tool is? Don't worry. This article will tell you what it is and how to use the tool to create installation media.

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After that, we will introduce how to fix unmountable boot volume Windows 10 problem step by step.

Step 1: Boot your computer from the installation disc and enter the welcome interface. And click Next to continue.

Step 2: Then click Repair your computer in the bottom-left corner to continue.

click Repair your computer to continue

Step 3: Then choose Troubleshoot in the popup window to continue.

Step 4: Next, click Startup Repair under Advanced options and choose the target operating system to continue. Then choose Windows 10 which is installed on your computer to continue.

click Startup Repair to continue

And the repair process will take a long time. So you need to wait patiently for the process to be finished. After that, you can restart your computer to check whether the issue unmountable boot volume is fixed.

If this method doesn’t make a difference, you can go to the next methods.

Repair the Master Boot Record

Now, we will demonstrate the third method to solve the unmountable boot volume error Windows 10. To fix unmountable boot volume Windows 10, you can try repairing the MBR.

MBR, whose full name is Master Boot Record, is a kind of boot sector stored on the hard disk drive containing the necessary computer code to boot the computer.

So when the MBR is corrupted, you may also encounter the unmountable boot volume error Windows 10. Thus, you can fix MBR to solve unmountable boot volume Windows 10.

Now, we will introduce how to repair MBR step by step.

Step 1: Boot your computer from the Windows installation disc. So you can repeat the steps of the first solution until you see the screen of Advanced options.

Step 2: Then choose Command Prompt to continue.

choose Command Prompt to continue

Step 3: In the next window, type the following command in order. Remember to hit Enter button after each command and wait for each operation to finish.

  • bootrec /fixmbr
  • bootrec /fixboot
  • bootrec /rebuildbcd

type the Command and hit Enter to continue

Step 4: After the process is finished, type exit to leave Command Prompt window. Then restart your computer to check whether the issue unmountable boot volume is solved.

As to fixing MBR to solve the issue unmountable boot volume, besides the method we have mentioned in this article, you can also try MiniTool Partition Wizard, which can help to rebuild MBR with ease. For the detailed steps, you can refer to the post: Step-by-Step Guide to Repair and Fix MBR Windows 7/8/8.1/10. Or if you want to fix MBR without CD, you can try this way.

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Run Chkdsk Command

As we have mentioned in the above part, the issue unmountable boot volume Windows 10 can be caused by the damaged hard disk or corrupted files on the hard disk. So in order to fix the unmountable boot volume, try to run the chkdsk command to fix the errors on your hard disk. And we will show you the step by step guide.

Step 1: Boot your computer from the Windows installation disc and go to the Advanced options page.

Step 2: Select the Command Prompt in the main interface.

Step 3: Type the chkdsk /r c: command in the command window and hit Enter to continue.

type the command

Tip: The letter C refers to your boot drive. If your boot drive is not C, you can replace it.

Then you will receive a message which tells you that the Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? Thus, you need to type Y to continue.

After that, the computer will reboot to check the errors on your hard disk. When it is finished, you can check whether the issue unmountable boot volume is solved.

Run System File Checker

If the system files are corrupted, you may also encounter the issue unmountable_boot_volume Windows 10. Thus, you can run System File Checker to repair the corrupted system files so as to solve the issue

Now, you can refer to the step by step guide.

Step 1: Boot your computer from the installation disk and go to the Advanced Options.

Step 2: Choose Command Prompt to continue.

Step 3: In the command line Windows, type the command sfc /scannow and hit Enter to continue. Please do not exit the command line window until you see the message verification 100% complete.

type the command to continue

When the process is finished, you can reboot your computer to check whether the issue unmountable boot volume is solved.

If the System File Checker fails to work, this post Quickly Fix – SFC Scannow Not Working (Focus on 2 Cases) may help you.

Reinstall Windows 10

If none of the above methods is working, you need to reinstall the operating system. However, before reinstalling Windows 10, you had better back up all your important files so as to avoid data loss.

windows backup thumbnail
How to Back up Windows to Safeguard Your Computer? Try MiniTool!

Do you know how to perform Windows backup with ease so as to protect your PC and data? Try to use MiniTool programs to back up Windows.

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After that, you can boot your computer from the Windows installation disc and click Install Now to reinstall the operating system.

After I read this article, it has successfully helped me to solve the issue unmountable boot volume. If you have the same problem, have a try.Click to tweet

Useful Suggestion

After you have fixed the issue unmountable boot volume, it is recommended to create a system image so as to restore the computer to a normal state when encountering the issue unmountable boot volume error Windows 10 again or meeting other issues.

Thus, to create a system image, the professional Windows backup software – MiniTool ShadowMaker is strongly recommended. MiniTool ShadowMaker enables you to back up files, folders, partitions, disks, and the operating system.

In addition, MiniTool ShadowMaker also enables you to perform some recovery solutions. So with so many powerful features, download MiniTool ShadowMaker Trial immediately to have a try.

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And now, we will demonstrate how to back up the operating system so as to keep your data and computer safe. You can refer to the following guide.

Step 1: Install MiniTool ShadowMaker and launch it.

  1. Download MiniTool ShadowMaker and install it on your computer.
  2. Launch it.
  3. Click Keep Trial to continue.
  4. Click Connect in This Computer to enter its main interface.

click Connect in This Computer to continue

Step 2: Select the backup source and destination

  1. MiniTool ShadowMaker is designed to back up the operating system by default. However, if you want to choose the backup source or choose the whole system disk by yourself, you can click Source module and click Disk and Partitions to continue.
  2. Then click Destination module to choose a destination path. Here are five paths are available: Administrator, Libraries, Computer, Network and Shared folder. You can choose any one based on your own needs. We suggest choosing an external hard drive.
  3. Then click OK to continue.

choose a target disk and click OK to continue

Kind Remind:

  • MiniTool ShadowMaker enables you to create a backup on a regular basis through its Schedule
  • MiniTool ShadowMaker provides three different backup schemes and you can change it through Scheme
  • You can also set some advanced backup parameters through its Options.

Step 3: Start to backup

  1. After selecting the backup source and backup destination, you can start to back up.
  2. Click Back up Now to perform the backup task immediately.
  3. Or click Back up Later to postpone the task, but you need to restart it in the Manage

click Back up Now to continue

When the process is finished, you had better go to Tools page to create bootable media which can be used to boot your computer when it can’t boot normally from the operating system so as to help you perform some recovery solutions.

With this system image, you can effectively protect your computer and data. When you encounter the issue unmountable boot volume again or some other problems, you can directly restore your computer with this backup image instead of spending time to look for solutions.

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Bottom Line

This article has introduced 6 solutions to solve the unmountable boot volume issue. Thus you can try to adopt any method to fix unmountable boot volume Windows 10.

Now, it is your turn to have a try. In addition, if you have any better solution to solve unmountable boot volume, you can share it on the comment zone.

Or if you have any problem with MiniTool ShadowMaker, you can feel free to contact us via the email [email protected].

Unmountable Bootable Volume FAQ

???? How do I fix unmountable boot volume?
  1. Restart your computer.
  2. Use Windows 10 automatic repair.
  3. Repair MBR.
  4. Check disk.
  5. Run System File Checker.
  6. Reinstall Windows 10.
???? What causes unmountable boot volume?
  1. Corrupted system files.
  2. Damaged hard drive.
  3. Damaged RAM.
  4. Corrupted files on hard drive.
  5. More... 
???? What does unmountable boot volume mean Windows XP?
When encountering the error unmountable boot volume, it means that the boot.ini is corrupted or the hard drive is damaged or the file system can’t be mounted so that the computer can’t boot successfully.
???? How do I start Win10 in safe mode?
  1. Press Windows key and I key together to open Settings.
  2. Choose Update & Security.
  3. Go to Recovery section.
  4. Click Restart Now under Advanced Startup.
  5. Choose Troubleshoot > Advanced options > Startup Settings > Restart.
  6. Press 4 or F4 to start Windows 10 in Safe mode.

You can also refer to the post How to Start Windows 10 in Safe Mode (While Booting) [6 Ways] to find more ways to start Windows 10 is safe mode.

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