It is always unpleasant to turn on or restart the computer and run into a blue screen (BSOD) showing us an error that prevents the system from starting normally. In this case, today we are going to teach you how to fix the Unmountable Boot Volume error that you could suffer if you have a Windows 10 operating system.
The bug itself already gives us a lot of clues as to what is going on, as “Unmountable Boot Volume” literally means that it was not possible to mount the system boot volume . When we talk about the boot volume in Windows, it means that it is the volume or partition where the operating system is precisely installed, so if this happens it is impossible for the computer to boot. Let’s see what we can do about it.
How to fix the BSOD Unmountable Boot Volume
Suffering such an error means that there is something wrong with the system boot partition, usually caused by corrupt files or a damaged file system (often power outages). Sometimes the displayed BSOD will go into an automatic recovery process to try to fix it independently, so there are times when simply by waiting for it to finish and restarting the computer, the problem will be solved.
If this is not your case, since the system cannot boot, you will have to resort to a Windows 10 installation disk or USB to repair the problem. Insert the drive into your PC and let it start. When it does, a menu will appear asking if you want to install Windows or access the advanced options, and obviously we must select this second option and then choose “Advanced Options” and check the Startup repair option.
Follow the process and let the system do the work. In many cases this will serve to fix the Unmountable Boot Volume error, but if not, go back to the previous steps but select the “Command Prompt” option, from which we are going to try to repair the MBR ( Master Boot Record) of the system.
In the console that opens, run the following command:
“bootrec / fixmbr”
A process will start that normally does not last more than a few seconds, and once it finishes, we must execute two more commands, in this order:
“bootrec / fixboot”
“bootrec / rebuildbcd”
Once you have finished, remove the DVD or pen drive with the Windows 10 installation and restart the computer to see if it already starts normally. If Windows already starts up well, the problem will be solved, but if you still have the “Unmountable Boot Device” error message, then you will have to repeat the above process right up to the command console.
In this case, what we will do is run the command to verify the status of the storage device that we have in the equioo:
“chckdsk / rc:”
This process takes considerably longer, because the / r command will also look for bad sectors on the hard disk and try to repair them. Be patient and just wait for it to finish.
If none of this has worked, we recommend you go to the BIOS of the computer and check that the computer is detecting your storage drive. If it does not detect it, check the internal connections because it may have been disconnected, but if everything is fine, then it is possible that you have a hardware failure and the disk has passed to a better life and it is time to change it for one new.