Windows 8 and 8.1 Forums


Windows 8 is installed on D drive, how to change to C?

  1. #1


    Posts : 22
    Windows 8

    Windows 8 is installed on D drive, how to change to C?


    Hi,

    I installed Windows 8 on a separate hard disk plugged into a Windows 7 machine, ultimately of course resulting in a dual boot machine - with 7 on C: and 8 on D:. I added BOOTMGR to the Windows 8 drive (with bcdedit) and have removed the 7 drive leaving only the fresh Windows 8 drive in the PC.

    In Windows 8, I can see that the system drive is still D: - 8 doesn't show itself as C: at all, like my Google search results said it should.

    I tried changing the drive letter to C from diskmgmt.msc but I get an error saying: "Bad parameter".

    Now what's that all about? How to change the system drive into C?

    Thanks
    pilau, SevenForums member

      My System SpecsSystem Spec

  2. #2


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Welcome to EightForums.

    Can you post a screen shot of Disk management?

    Screenshots and Files - Upload and Post in Eight Forums
      My System SpecsSystem Spec

  3. #3


    Posts : 22
    Windows 8


    Click image for larger version

    There you go.

    Thanks for the prompt reply, too.
      My System SpecsSystem Spec

  4. #4


    Posts : 5,592
    ME, XP,Vista,Win7,Win8,Win8.1


    Try doing a Auto Repair.
    How to do a Auto Repair:
    Automatic Repair - Run in Windows 8
    Note: You may need to do startup repair 3 to 4 times.
    Startup Repair - Run 3 Separate Times - Windows 7 Forums

    How do a Refresh:
    Refresh Windows 8
    Click image for larger version
      My System SpecsSystem Spec

  5. #5


    Posts : 22
    Windows 8


    I don't want to be impolite and climb a high horse here but, I find it hard to believe Refreshing will do change any drive letters, because as far as I'm concerned all it does is reinstall Windows with the same settings and user files and apps intact. It's supposed to avoid this exact kind of modifications to the system.

    I will try the startup repair, though. See what's the story there.
      My System SpecsSystem Spec

  6. #6


    Toronto, Canada. Born in the U.K.
    Posts : 691
    Win 10 Pro + Win 7 Ult SP1 (x64)


    It can't be done. You'll have to do a Clean Install and use the Advanced Options to format and re-letter the drive during installation.
      My System SpecsSystem Spec

  7. #7


    Posts : 22
    Windows 8


    Are you confident? If that's true it is definitely not worth wasting my time on this.
      My System SpecsSystem Spec

  8. #8


    Toronto, Canada. Born in the U.K.
    Posts : 691
    Win 10 Pro + Win 7 Ult SP1 (x64)


    Well the only other way I can think of is to put the 7 drive back in and change its drive letter from within 8. Then somehow boot into 7 and do the same for 8....if you get my drift. Simply speaking, you can't change a system drive letter if that's the only system you have.
      My System SpecsSystem Spec

  9. #9


    Posts : 22
    Windows 8


    I see. Very well, I guess I'll just drop it

    Thanks anyway guys. Knew I could rely on a quick and professional answer on these forums.
      My System SpecsSystem Spec

  10. #10


    Toronto, Canada. Born in the U.K.
    Posts : 691
    Win 10 Pro + Win 7 Ult SP1 (x64)


    OK, good luck ;-)
      My System SpecsSystem Spec

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Windows 8 is installed on D drive, how to change to C?
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