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What Is an Unmountable Boot Volume Error?

The Windows "Unmountable Boot Volume" error is serious and can cause damage to your files if not addressed quickly.


Windows users are all too familiar with the error messages that plague their screens. Each of these errors is the result of different issues within a hard drive or the operating system itself. When these errors appear, it is important to understand what the cause is and how you can mitigate the situation. The “Unmountable Boot Volume” error is one of the more serious issues that can cause damage to your files if not addressed as soon as possible.

Meaning and Causes of the Error Message

When your computer experiences an Unmountable Boot Volume error, your computer will display the Blue Screen of Death with some version of an explanation that reads, “Your PC ran into a problem and needs to restart.” Below that will be the error message, letting you know what the problem is specifically. There are a variety of causes for this error with some being physical damage to the drive and others simply being a logical mishap. They include:

  • Corrupted File System: Files that are responsible for running your system become corrupted through malware or user error. This prevents your file system from mounting and in turn, your computer will not operate.
  • Windows 10 Update: Sometimes, an update will cause changes to your computer’s operation and result in the error code. This installation is jarring to the system and it will not work correctly. 
  • Damaged Hard Drive: The drive that stores computer memory and data may become damaged after being dropped, in water or fire, or the mechanical components start to wear out. If this happens, chances are your computer won’t be able to boot.
  • Wire Connection: In some cases, users may connect the drive to the controller with a standard 40-wire connector cable instead of the 80-wire that is required. This also results in boot errors.


Troubleshooting Unmountable Boot Volume

The most frightening thing about the unmountable boot volume errors is that it can happen at any time without warning. A user can’t access any files on the computer when this screen appears and troubleshooting is difficult and risky. Some potential methods have been suggested in the tech community:

  • Fixing the master boot record
  • Reboot your computer
  • Reinstall Windows 10

While some of these methods may be the solution, if they do not work for your computer, chances are your drive has experienced damage and needs a professional data recovery company to protect your files. If you do see the unmountable boot volume error, do not attempt to run chkdsk, as this could cause further damage to the drive and result in unnecessary data loss. 

The engineers at Secure Data Recovery have worked with all drive types and operating systems and can retrieve files from any device regardless of error message. When you experience this error message, shut down the computer and call us 24/7 at 1-800-388-1266.

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