We start by gaining an insight into what is exactly the Unmountable Boot Volume Error. Also know as I say STOP: 0x000000ed, both are same blue screen of death error as this error occurs when the hard disk has a problem. The reasons for this error can be attributed due to a number of things. This could be due to Windows installation or upgrade, or because you have made some changes to your computer's hardware. It can also be because the operating system has outlived its age and hence, is popping up this error. Therefore, you can follow the instructions given further in the article to fix the error of Unmountable Boot Volume error.
In major cases, the error is generated due to a corrupted hard disk of yours. We have discussed a number of reasons that can cause corruption of your hard disk. Third party security suites can cause hardware corruption, which can amount to this error. Often, your hard disk cannot load the boot volume on Windows.
Cause of Unmountable Boot Volume Error:
Boot Volume Corrupted:
For the ones who are getting the below screen at their Window startup, they can use the CMD command to repair hard disk boot volume. All we require is a CMD to type the command into the command prompt, and this one includes "˜CMD Run by Windows Disc'.
Just follow the given commands and type them in the Command prompt window.
The above listed commands help you to find out the Windows Drive Letter that is going require treatment. This is essential to understand the part of our windows Drive Letter that requires the troubleshooting process.
Restart your computer to finish the process.
1. Running the SFC Command to deal with Corrupted Files
The process has to be carried out from the Administrator Command Prompt window. If you are using Windows 10, you can simply right click on the Start button, select "˜Command Prompt (Admin)', and if you are using a different version of Windows, you can access it by searching the Start Menu for Command Prompt, right-click over it, and select the option of "˜Run as Administrator'.
You then have to type the following command into the Command Prompt Window, and press Enter. This would help you to run a complete system scan: sfc/scannow
You can then leave the command prompt window open until the command completes its execution. This can take a while depending on the condition of the system. If no error is detected by the command, you'll see a message which would say, "Windows Resource Protection did not find any integrity violations".
However, if you see an alternate message which might read, "Windows Resource Protection found corrupt files but was unable to fix some of them", you have to carry out the reboot in safe mode before doing anything else. For the ones who are using Windows 10, accessing the Safe Mode might be tricky as the booting takes place in a very short amount of time, but it can be done by holding the Shift key while clicking the restart option which will allow them to access the advanced boot options menu. For the earlier variants of Windows, one has to hold up the F8 key while the booting takes place. You then have to run the above command in the safe mode.
2.Running the DISM Command to Fix SFC Problems
For the ones using Windows 10, the deployment image and servicing management tool can help you fix the component store corruption that doesn't allow the SFC command from proper execution. Executing this command is not that difficult, and can be done through following the given steps.
This trick has been successful in resolving 90% of the issues related to Unmountable Boot Volume Error. This error occurs between windows installation. By making changes in the BIOS setting, you can overcome the error of Unmountable Boot Volume.
For readers' convenience, we also list out the steps that are crucial in the understanding of accessing BIOS on Windows 10: