1. Joined : Jan 2017
    Posts : 2
    Bill Gates OS
       6 Days Ago #1

    Delete or format partition during clean install windows

    Hey guys i just join this forum and today i've plan to clean install my PC well i kinda noob with this one and i like to ask some question. Once you get to the Custom (Advanced) tab of Windows 10 clean install there are options to delete the partition, format, etc. Which one should i choose format or delete ? Or maybe i can do both like first format then delete ? Whats your guys recommendation and what's the different ?
    Thanks in advance. Excuse my english.
      My System SpecsSystem Spec

  2. Joined : Jul 2014
    San Jose, California
    Posts : 1,951
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       6 Days Ago #2

    1. Disconnect all other HD/SSD except the one you try to install Windows
    2. Boot up Windows Installation media
    3. On first screen, press SHIFT+F10 then type:
      select disk 0
    4. Continue. Select the unallocated partition (Only one shown) then click next, windows will create all needed partitions.
    5. Done.
      My System SpecsSystem Spec

  3. Joined : Oct 2014
    New Jersey
    Posts : 677
    Windows 7 Pro x64 Windows 10 Pro x64
       6 Days Ago #3

    There is no point in formatting a partition if you are just going to delete it.

    Topguns instructions are precise, follow them to thoroughly wipe the drive.

    The installer will make the necessary partitions.

    Before you do anything, post a shot of Disk Management.
    Last edited by AddRAM; 6 Days Ago at 06:17.
      My System SpecsSystem Spec

  4. Joined : Jan 2017
    Posts : 2
    Bill Gates OS
       6 Days Ago #4

    So i just have to delete it without formating to make it unallocated right ?
    I kinda confuse because in some tutorial they do both or either.
      My System SpecsSystem Spec

  5. Joined : Oct 2014
    New Jersey
    Posts : 677
    Windows 7 Pro x64 Windows 10 Pro x64
       6 Days Ago #5

    If you want, it`s up to you.

    If you already have the other small efi and recovery partitions you can just format your install partition so nothing gets carried over.

    But if you want to wipe the entire drive clean, then delete the entire drive to unallocated space and click next.

    As I`ve already said, you can`t format unallocated space, the installer will create the partitions and format them for you.

    Windows 10 - Clean Install
      My System SpecsSystem Spec

  6. Joined : Dec 2016
    Posts : 33
    Windows 10
       6 Days Ago #6

    Step 1:

    If the entire drive not show as unallocated space, delete all partitions on the drive until it's unallocated (see screenshot below). Select a partition and click on the "Delete" option for each partition.

    Click image for larger version. 

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    Step 2:

    - Option 1:

    Click on the "Next" button. The installation of Windows 10 will begin. All the required partitions are created automatically during the install.

    - Option 2:

    Click image for larger version. 

Name:	Select the New and Apply buttons.png 
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    Click image for larger version. 

Name:	Windows might create additional partitions for system files.png 
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    Click image for larger version. 

Name:	GPT.png 
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ID:	116656

    Click on the "Next" button. The installation of Windows 10 will begin.

    For more info about UEFI mode and Legacy BIOS mode, look at post #5 in this thread: Cant install Windows 10 because of GPT partition error message
      My System SpecsSystem Spec

  7. Joined : Jul 2015
    Posts : 6,849
    Windows 10 Pro
       5 Days Ago #7

    The good thing about deleting the partitions is that Windows 10 will create fresh, new System and Recovery partitions. They can get corrupted too, so if you are going to start with a fresh Windows 10 partition, might as well start with all fresh partitions.
      My System SpecsSystem Spec


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