> How to > Resource > [Fixed] Unable to Reset Your PC. A Required Drive Partition Is Missing

[Fixed] Unable to Reset Your PC. A Required Drive Partition Is Missing

Updated on Aug 20, 2018 by Jean to Resource

Full solutions to fix Windows 10/8/7 unable to reset your PC. a required drive partition is missing in Dell, Acer, HP, Asus. In the end, do not forget to use EaseUS data recovery software to recover lost data after fixing missing drive partition error.

"I'm trying to reset my PC, but when I do it using a USB drive, made with the media creation tool, I get the following error:

Unable to Reset PC. A required drive partition is missing."

Error Description

Actually, apart from the missing drive partition error, there is another one similar and common error, which is "the drive where Windows is installed is locked". What do these errors suggest? And how do they come?

This tutorial will give you the answer, and also teaches you how to fix the problem without losing your precious computer data. Primarily, 'a required drive partition is missing' usually prompts when you're trying to perform a system reset or refresh in Windows 10/8/7, and most of the time, caused by the corruption of MBR or BCD record.


Since it's the corrupt MBR or BCD record that caused the problem, the only solution is to correct the MBR or BCD record by referring to the detailed guide in below. By the way, this fixing method requires a Windows recovery disk.

  • Insert Windows recovery disk or Windows installation disk in your DVD or USB.
  • Restart your PC. When your Windows boots up, repeatedly press the F12 key to bring up the boot menu (F12 key may be different on your system).
  • Select either the DVD or the UDB disk from the boot menu.
  • Wait for the computer to discover the bootable media and press a key when the message appears on your screen to boot into the Windows Installation or Recovery DVD.
  • Choose to Install Windows from the screen that appears and then select Repair your computer.
  • From the repair menu, select Troubleshoot -> Advanced -> Command Prompt.
  • In the command prompt that opens, issue the following command one by one

bootrec /fixmbr 

bootrec /fixboot 

attrib C:\Boot\BCD -h -r -s ren 

C:\Boot\BCD C:\Boot\BCD.bak 

bootrec /rebuildbcd

How to recover data lost from fixing 'a required partition drive is missing' error?

Some of you may, unfortunately, lose very important data while trying to use the command prompt to fix missing drive partition error in Windows 10; or it's a natural thing to recover data on a corrupted hard drive partition. Therefore, download EaseUS Data Recovery Wizard, and learn further about how to use the hard disk data recovery software to recover lost partition data now.

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