Windows 8 and 8.1 Forums


Unable to format Drive D:

  1. #1


    Posts : 1
    Windows 8.1 Enterprise 32-bit

    Unable to format Drive D:


    Hi,
    Click image for larger version
    I am unable to format drive D, It shows an error "Windows was unable to complete the format"
    even in disk management the format option is not click-able for drive D. I had windows 7 Installed in it, and later I installed windows 8.1 in drive C. right now I am using windows 8.1 and I have also deleted some important system files that were in drive D, so windows 7 is not usable, and I don't want to use it.
    Please Help.........

      My System SpecsSystem Spec

  2. #2


    Posts : 1,121
    Windows 8.1 x64


    The boot files for Windows 8 are in that partition, thus it is marked as System and Active.
      My System SpecsSystem Spec

  3. #3


    N. Calif
    Posts : 2,585
    W10 Pro (desktop), W10 (laptop), W10 Pro (tablet), W10 (laptop)


    Expanding a little on what Saltgrass said, you can't format a drive that the system was booted from. You would need to boot from an install disk or something like that to be able to format your D: drive. Of course, if you format that drive you would then need to re-install the OS. Is that what you want to do?
      My System SpecsSystem Spec

  4. #4


    Posts : 1,121
    Windows 8.1 x64


    You could move the boot files, but you can't move them to a Logical partition. Since part of the drive configuration is hidden in the attachment, hard to tell what is behind the menu dialog, except that it is a primary partition.

    Let us know.
      My System SpecsSystem Spec

Unable to format Drive D:
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