Windows 10: How to prepare partitions for reinstalling windows?

  1.    09 Feb 2018 #1

    How to prepare partitions for reinstalling windows?


    I'm reinstalling windows 10 soon, following this tutorial Clean Install Windows 10 Installation Upgrade Tutorials since it seems to be the best and most complete (can't find any good videos which would just be easier visually).

    On step 13, it says "A) Delete all partitions/volumes on the Drive # (ex: Drive 0) that you want to install Windows 10 with UEFI on until that Drive # shows as unallocated space. (see screenshot below)"


    So I just select each drive that shows up and I delete it? Or will there be "Drive 0 unallocated space" that I do not delete, and just choose that and select next?

    Thanks for the help, I have never reinstalled windows and just want to make sure I don't mess anything up.
      My ComputerSystem Spec


  2. Posts : 411
    Win 10 pro Upgraded from 8.1
       10 Feb 2018 #2

    Na you really need to run Dispart and Clean the Disk/SSD that leaves them RAW just as they come from the manufacturer. And then using the USB thumb drive I created with the MCT I boot it UEFI and install windows, The install will create all the partition it needs to boot and run.
      My ComputersSystem Spec

  3.    10 Feb 2018 #3

    Clintlgm said: View Post
    Na you really need to run Dispart and Clean the Disk/SSD that leaves them RAW just as they come from the manufacturer. And then using the USB thumb drive I created with the MCT I boot it UEFI and install windows, The install will create all the partition it needs to boot and run.
    Can you elaborate? This is my first time hearing about this. Doesn't the windows installer format it before installing the OS?
      My ComputerSystem Spec

  4.    10 Feb 2018 #4

    If there is already data on the drive you want to install onto then you have to individually delete the partitions.

    The screen will initially look like this. Once you delete all the partitions on the drive then there will just be one "unallocated space" entry. If you have multiple drives then make sure you know which partitions you're deleting.

    Click image for larger version. 

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    If you want to use diskpart, press SHIFT-F10 during Windows setup at or before the partition screen. Again, if you have multiple drives then make sure you know which one you're selecting.

    Click image for larger version. 

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    Then close the window and press refresh on the partition window, if needed. Then it will look the same as the tutorial with one "unallocated space" entry.
      My ComputerSystem Spec


  5. Posts : 1,885
    Windows 7 Pro x64 Windows 10 Pro x64
       10 Feb 2018 #5

    Before you do anything, unplug any and all other drives before you attempt to install windows. Especially if you use Diskpart.

    Then, as already explained, delete any partitions that you do not want on the install drive.

    If you have data on a partition you want to save, you certainly would not want to delete that partition All your data should be backed up anyway.
      My ComputersSystem Spec


  6. Posts : 3,242
    3-Win-7Prox64 2-Win10Prox64
       10 Feb 2018 #6

    Hi,
    Indeed remove all data drives you have
    Use the custom install method has worked countless times no need to use disk part
    The custom install will show all partitions just select and delete each one till it only shows one left and your done.
      My ComputersSystem Spec

  7.    10 Feb 2018 #7

    ThrashZone said: View Post
    Hi,
    Indeed remove all data drives you have
    Use the custom install method has worked countless times no need to use disk part
    The custom install will show all partitions just select and delete each one till it only shows one left and your done.
    Except there shouldn't be any partitions left - nothing but unallocated space - which is not a partition. Unless you are intentionally leaving a data partition on the drive.
      My ComputerSystem Spec


 

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