The "Unmountable Boot Volume" error is a common error for a Windows PC and it sure is one hell of a problem. It stops the machine from starting and also locks the user out of all the files and data.
But as all problems have a solution, this one also has it's solution too.
The good thing is that, if your machine is an old one and is facing this issue after you upgraded it to windows 10, there is still a way to resolve this mishap.
Before we get into the solutions, first let us look at the cause of the problem and get to the core of it.
Unmountable Boot Volume error is most likely to occur due to the following reasons :
1. Corruption of files on the Hard Disk
2. Corrupted system files
3. Damaged RAM
4. Damaged Hard Drive on an older computer
simply need to get one USB Drive with a minimum capacity of 4 GB. Once you have it, you need to download Windows 10 media creation tool from the official website.
Some users have reported facing the Unmountable Boot Volume error after they updated their machine to a latest Windows Operating System. It is possible that this error may occur for an actual reason when you start your computer after updating it to the latest version of Windows.
Once your Computer encounters this issue, you will see a blue screen appearing with the "Unmountable Boot Volume" message and your machine will immediately try to fix this problem by itself.
It is less likely that your computer will actually recover from this problem and solve this issue by itself, but, well you might just get lucky sometimes.
If your luck isn't on your side on the day, then here are 5 easy ways by which will help you to fix this issue and make your windows 10 computer or laptop work fine again.
Before starting, I would like to mention that, the following are the solutions which are applicable only to a Windows 10 device.
The very initial step in resolving the "Unmountable Boot Volume" error is to be secured that you have a Bootable USB drive which will let you get an access to your own device when your device won't is starting properly.
If you do not have a Bootable USB drive of your own, it is not so difficult to make one by yourself.
Now that your own Windows 10 computer is locked and inaccessible, you can easily use another computer of your own or maybe someone else's.
The thought behind this is to make your device boot from the USB Drive and try to access the troubleshooting options available on Windows which help to troubleshoot the problem on your computer.
Method 1 : Using Automatic Repair
The simplest way in which the Unmountable Boot Volume error can be solved is by trying the Automatic Repair Option which is available on Windows 10.
It is always recommended to the users to try the Automatic Repair Option, even if the computer has attempted to repair itself following the display of the Unmountable Boot Volume Error blue screen.
1. First of all, you need to shut down your Machine by pressing the Power Button.
2. Once you have completely turned off your computer, insert the USB drive which contains the Windows Media Creation Tool into the USB port on your computer and tries to restart the computer by holding the power button.
3. After completing the previous step, your computer is likely to start the booting process. This is the time when you have look properly and press the recommended Function Key immediately which will let you enter the BIOS screen of your computer. ( The function key which is needed to enter might vary from Computer to Computer. )
4. Once the following screen appears, you have click on the Boot from USB option.
5. After this, you have to select the USB Drive from which you want to boot. Make sure the USB drive you select contains the Media Creation Tool.
6. Your computer will now boot with the help of the USB drive and you will see a screen. At the lower-left bottom of the screen, you will find the Repair your computer option. Click on that option.
7. On the following screen, you will see three options, one of which will be "Troubleshoot". Click on that option.
8. After clicking the troubleshoot option, choose the Advanced Options on the next screen.
9. On the screen containing all the advanced options, select the automatic repair option. You may also see Startup repair option instead of automatic repair option. Click on that option and click next.
10. On the next screen, select the Windows 10 as the Operating System which is installed on your Machine.
After all these steps, it is important you wait patiently while the utility tries to repair the files and fix this issue.
It might take a long to fix this problem, but you shouldn't cancel the process mid-way because you feel it is taking too much time.
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Method 2 : Using Chkdsk command
You can face the Unmountable Boot Volume error because of the issues on the hard drive. This sort of errors or issues can be resolved by running the Chkdsk command from the command prompt window. You just need to follow the following steps :
1. First of all, you need to shut down your computer and repeat all the steps starting from 2 to 6 which are given above in the first process. You need to reach the screen which has the windows logo on it and had to Repair your computer option on the lower left corner of the screen. Select that option.
2. You then need to click on the Troubleshoot option.
3. Once the troubleshoot screen has opened, click on the advanced options.
4. After this, you need to select the Command Prompt option.
5. Once you have entered the Command Prompt window, just type chkdsk /r c: and press the enter key on your keyboard. Keep in mind, if your usual boot drive is not "C" you will need to alter "C:" with a Bootable drive alphabet that is applicable to your machine.
6. After completing the above step, you need to wait patiently while the Chkdsk function will check your C: drive for any errors. Keep in mind that this whole thing will take a lot of time, so you need to give that much amount of time to your computer so that it can recover from the issues or errors on the Hard Drive.
Once the Chkdsk function has completely finished, you need to restart your computer and check whether the problem has been resolved or not.
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Method 3 : Repair Master Boot Record
1. Shut down the computer and follow the steps 2 to 6 in the first method.
2. You will reach a screen on which you will see the option Repair your computer on the corner of the left side on the bottom of the screen. Click that option. On the following screen, select the Troubleshoot option.
3. Once you have entered the Troubleshoot screen, click on Advanced Options.
4. After this, Click on Command Prompt.
5. Once you're in Command Prompt, you just need to type bootrec /fixboot and hit the enter key on your keyboard.
Once you have executed that step, you need to wait until the process is completed. After that, just restart your computer and check whether the problem is fixed or not.
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Method 4 : Just leave your computer on its own for sometime
This may seem a bit bizarre but there have been cases when the following method has been found useful. To recover your computer from the Unmountable Boot and error you need to just leave it on it's for at least 3 to 4 hours.
Just shut down your computer and let it cool down on its own for an hour or more.
After this, restart your computer and let it show the screen with Unmountable Boot Volume error. Your computer will then try to fix the problem by itself and will end up showing a blank screen.
You need to keep your computer in that state for at least 3 or 4 hours.
There are very few chances that this will work and you will see your computer working normally again.
If this method doesn't, solve your problem then just follow the last method which is the ultimate solution of all problems related to the operating system.
Method 5 : Reinstall Windows 10 on your computer
There is a huge disadvantage of reinstalling windows 10 because you will lose all your data and files on your computer but your computer will be up and running smoothly again.
You just need to shut down your computer and follow the steps 2 to 6 in the first method, once that is done you just need to click on Install now and reinstall Windows 10 on your machine.