Windows 10: Deleting or Formatting a Partition

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  1. Posts : 17,827
    windows 10 professional version 1607 build 14393.969 64 bit
       05 Dec 2017 #11

    The drive can be cleaned using diskpart.

    In case the drive is not GPT and you want GPT:

    diskpart
    List disk
    select disk 0 (make sure disk 0 is where you want to install Windows, check twice)
    clean
    Convert gpt (if required for UEFI)
    exit
    exit


    Proceed with install and let Windows create partitions it needs.
      My ComputerSystem Spec

  2.    05 Dec 2017 #12

    tried the "clean" option last night but wouldn't let me do it - can't remember the wording that came back on cmd prompt
      My ComputerSystem Spec


  3. Posts : 17,827
    windows 10 professional version 1607 build 14393.969 64 bit
       05 Dec 2017 #13

    Another options if the drive is easily removed is to place it in a hard drive bay of another computer or into a hard drive enclosure.
    Then you can run the clean option using diskpart.
      My ComputerSystem Spec

  4.    05 Dec 2017 #14

    I will re-try the clean install and see if any options to delete/format comes up - if not maybe try the HD into a different PC and see if I can do it that way.

    I'll still post a pic of the disk partitions tonight before I attempt anything.

    Thanks for your help btw
      My ComputerSystem Spec


  5. Posts : 10,705
    Windows 10 Pro and Windows 10 Pro Insider
       05 Dec 2017 #15

    If you use the installer and go to command prompt, you should have no problem using Diskpart from there.
      My ComputersSystem Spec

  6.    05 Dec 2017 #16

    I'll try that too essenbe
      My ComputerSystem Spec


  7. Posts : 10,705
    Windows 10 Pro and Windows 10 Pro Insider
       05 Dec 2017 #17

    If you boot into the installer and hold Shift then press F10, you will get a cmd prompt. Alternatively when you get to the window of where do you want to install, you can highlight each partition and press delete to delete all partitions.
      My ComputersSystem Spec

  •    05 Dec 2017 #18

    when you say boot into the installer do you mean when I boot into the Win10 install DVD ??
      My ComputerSystem Spec


  • Posts : 2,007
    Windows 3.1 to Windows 10
       05 Dec 2017 #19

    Boot into my Rescue Media...
    Then use aomie partition assistant to Copy/clone the D;/ partition to the C:/ partition
    Then delete the D:/ partition
    OR Even better...
    just wipe both drives, format the D:/ Drive and then run setup.exe from the mounted windows 10 ISO
    selecting the unallocated Drive as the installation drive..
      My ComputerSystem Spec


  • Posts : 10,705
    Windows 10 Pro and Windows 10 Pro Insider
       05 Dec 2017 #20

    Yes. You will see this screen

    Click image for larger version. 

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    Highlight each partition one at a time and click delete. until it shows as unallocated like in the screenshot.
      My ComputersSystem Spec


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