Encountering errors on your computer can be unsettling, especially when the error pertains to booting up your machine. Among these, the “Unmountable Boot Volume” error is particularly daunting. So, what exactly does this error mean, and how can you address it?

Introduction: What is the Unmountable Boot Volume Error?

It’s a dreaded blue screen of death (BSOD) error that pops up when Windows is unable to mount the system partition during startup. Essentially, your computer can’t access the system files needed to launch the operating system.

The Symptoms and Signs

The most evident sign is the blue screen displaying the error message, often accompanied by a stop code. Your computer might repeatedly attempt and fail to boot, getting stuck in a frustrating loop.

Potential Causes Behind the Error

Hard Drive Corruption

Over time, sectors on a hard drive can become corrupted, making data unreadable. If system files are located on these sectors, you may encounter the error.

Faulty Hardware

Issues with your computer’s hardware, particularly the hard drive or RAM, can trigger this error.

Damaged System Files

Vital system files that are damaged or missing can prevent Windows from booting, leading to the unmountable boot volume error.

Fixing the Unmountable Boot Volume Error

Using Windows Startup Repair

  1. Boot from a Windows installation or recovery disk.
  2. Choose ‘Repair your computer.’
  3. Select ‘Troubleshoot,’ then ‘Advanced options,’ and finally ‘Startup Repair.’

Check Disk Utility

  1. Boot from a Windows disk and choose ‘Repair your computer.’
  2. Navigate to the Command Prompt.
  3. Type chkdsk C: /f /r and press Enter.

Reinstalling the Operating System

If other methods fail, you might need to reinstall Windows. Ensure you back up any crucial data before proceeding.

Preventing the Error in the Future

Regular Disk Checks

Routine disk checks can detect and fix potential corruption, reducing the risk of encountering boot errors.

Keeping System Files and Drivers Updated

Ensuring your system files and drivers are up-to-date can prevent potential incompatibilities and issues.


While the “Unmountable Boot Volume” error can be alarming, understanding its causes and solutions can equip you to tackle it effectively. Remember, regular maintenance and updates are key to a smooth computing experience.