Top 5 Ways to Fix Unmountable Boot Volume in Windows 11

You can know why the blue screen error unmountable boot volume in Windows 11 dell laptop appeared and 5 ways to fix it as well as how to prevent the system from any issues.


By Clytze Updated on October 21, 2022

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Why Unmountable Boot Volume in Windows 11 Dell Laptop?

A boot volume is a partition of a storage drive (SSD or HDD) that holds Windows. When your computer does not load Windows properly, this error as shown below appears, resulting in a blue screen of death. UNMOUNTABLE_BOOT_VOLUME is a common error message that usually appears on Windows 11/10/ 8/10/7/XP in HP, Lenovo, Dell, and Toshiba laptops.


There are many reasons for this blue screen of death error, and this article summarizes a few common reasons for you.

  • Corrupted system files: If the system files are corrupted, this may cause a number of problems. One of them is the inability to boot into Windows, which leads to the "unmountable boot volume" error.
  • Corrupted hard drive or RAM: Your hard drive and RAM memory are important parts of your computer. They are responsible for storing your data, both permanent and temporary. If they are damaged, there is high probability that you will not be able to boot you PC.
  • Improperly configured BIOS: This rarely happens, but if you modify the BIOS yourself, it can also lead to this error.

How to Fix Unmountable Boot Volume in Windows 11

Once you understand the reasons, you can learn 5 useful ways to fix this error in the next article. You can try these methods in turn, believing that there is always a way to achieve the goal. Each method will include a specific graphic tutorial, and you can keep reading for more details.

Fix 1. Restart Your Computer

In the event that you encounter this blue screen error, if it appears only once. You can first try restarting your computer to see if the problem will be resolved. This is because Windows 11, just like all other Windows operating systems, may encounter temporary problems that cause a blue screen of unmountable boot volume error.

Restarting your computer will allow the system to detect the problem and automatically fix your computer the next time you boot. If you encounter the unmountable boot volume error again when you try to reboot and it won't let you load Windows at all, in that case, read on for a more careful troubleshooting approach.

Fix 2. Use Automatic Repair

Windows 11 has repair tools that come with it, and one of them is an automatic repair tool. You can use it when you don't want to reinstall your system and want your computer to troubleshoot and fix errors by itself. You can use the Windows 10/11 installation media to access this automatic repair tool, which can be used to troubleshoot boot problems. You can follow the steps below.

Step 1. Start your Dell laptop with a Windows 10/11 DVD or USB drive to gain access to the menu.

Step 2. Once your computer boots, click on Repair your computer and choose the Troubleshoot option.

Step 3. You’ll see a list of advanced options. Choose Startup Repair and follow the on-screen instructions to automatically fix issues related to starting your system.

Startup Repair

Step 4. Restart your computer and see if the troubleshooter was able to fix the unmountable boot volume in Windows 11.

Fix 3. Fix the MBR

The corrupted MBR may also cause this boot error, so you can fix the problem by fixing the Master Boot Record. You need a Windows 10/11 installation media, then just follow the steps below.

Step 1. Boot from your Windows 10/11 install media (DVD or USB drive).

Step 2. While your computer boots, click on Repair your computer and choose the Troubleshoot option.

Step 3. You’ll see a list of advanced options. Choose the Command Prompt.

Step 4. Type the following commands and press Enter after each move.

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

Rebuild BCD

Step 5. Type in exit and hit enter to leave the Command Prompt, then restart your computer.

Fix 4. Run the SFC

For the Command Prompt solution, you can also try another Windows built-in tool - SFC. This Windows utility can find corrupted Windows system files and try to repair them. You can follow the steps below.

Step 1. Open the menu on your recovery drive again, and click Troubleshoot > Advanced Options > Command Prompt.

Step 2. In the command prompt window, type sfc /scannow and press Enter button.


Step 3. Restart your computer when the process is finished.

Fix 5. Run the CHKDSK Utility

If none of the previous methods helped you fix the error, you can also run the check disk command from a command prompt. This command can be used to perform quick troubleshooting caused by a bad hard disk. Here are the steps you can follow.

Step 1. Open Command Prompt, type chkdsk /r c: and then press Enter.

Chkdsk R C

Step 2. Type Y and hit Enter when you are prompted to schedule the check after a reboot.

Step 3. Restart and let the check proceed. It may take a while just wait patiently.

Prevent Your Windows 11 from Any Issues

After successfully fixing this error, in order to protect your system from any issues in the future, it is recommended that you choose a free backup software, such as AOMEI Backupper Standard to backup your system regularly. This way, even if your computer encounters a blue screen of death error or other issues, you can use the previously created system backup for a quick restore without any risk of data loss. It also has the advantages listed below.

  • Schedule Backup: It allows you to backup system with fixed intervals including Daily/Weekly/Monthly. Then the software can automatic run the scheduled backup task based on the frequency.
  • 2 backup services: It supports Microsoft VSS and AOMEI backup services, so it can ensure that your backup task will not be interrupted in the midway.
  • Different paths: You can backup your system to different destination locations, such as local disk, external disk, HDD, SSD, USB drive, NAS, etc.
  • Various systems: It supports all Windows operating systems, including Windows 7/8/8.1/10/11/XP/Vista, etc.

You need to download this freeware first and install it. If you are a Windows Server user, you can choose the AOMEI Backupper Server version.

Download FreewareWin 11/10/8.1/8/7/XP
Secure Download

Step 1. Open the software and click Backup > System Backup.

System Backup

Step 2. It will select system partition and boot-related partitions automatically. And you just need to select a destination.

Select Destination

Step 3. Click Start Backup to backup the Windows system.

Start Backup


  • Options: You can write comments, choose the compression level for your system backup or set email notifications.
  • Schedule Backup: This feature allows you to set the frequency of your backup, such as Daily, Weekly, Monthly, Event trigger and USB plug in. The professional version supports the last two features.
  • Backup Scheme: You can select different backup methods. And you can upgrade to AOMEI Backupper Professional to enjoy the differential backup method which can easily restore your scheduled backup. After the upgrade, you can also enable automatic backup cleanup feature to save disk space.        


This article describes 5 ways to fix unmountable boot volume in Windows 11 dell laptop error, you can try them in turn. To better protect your system from any problem, you can backup your system regularly with the free backup software AOMEI Backupper Standard. It allows you to choose different backup frequencies, backup methods, backup destination paths and operating systems. If there is any problem with your system, it can perform a quick restore at the first time.

In addition, its Universal Restore feature allows you to restore your system backup to a computer with different hardware. It provides File Backup, Disk Backup and Partition Backup functions to protect your computer in all aspects. You can download this software to explore more useful features.

Clytze · Editor
Clytze, an editor at AOMEI Technology, is passionate about safeguarding your digital world. She dedicates her expertise to empower users like you in data security and recovery. She firmly believes that everyone should have the tools and knowledge to protect their digital assets through computer backup, seamless disk cloning, and efficient file synchronization. Clytze is your trusted guide on the journey to data safety.