Windows 8 and 8.1 Forums


Accidentally formated Recovery and System partitions

  1. #1


    Posts : 8
    Win 8.1

    Accidentally formated Recovery and System partitions


    As title says, I was re-installing Windows 8.1 and I accidentally formatted all 3 partitions (Primary partition, Recovery and System).
    After that I couldn't finish installation of Windows. Tried to reset PC and no success.
    Now, I can't even choose partition to start Windows installation. (I have message "The selected disk is of the GPT partition style)

    Please guys help.

      My System SpecsSystem Spec

  2. #2


    Posts : 2,690
    Windows 3.1 > Windows 10


    At the present time your PC is booting in legacy mode.. Your prior OS was setup with UEFI-GPT..

    Go into your bios setting and disable legacy support.. then restart the windows setup
      My System SpecsSystem Spec

  3. #3


    Posts : 8
    Win 8.1


    I can't find any "legacy support" option in my bios.. sry I am nob.. how do I do it ? thanks
    I have Asus Rampage Extreme V board.
      My System SpecsSystem Spec

  4. #4


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    I guess you formated your SSD as an MBR style partition. I suggest that you boot from the installation disk again. On the first screen, hold SHIFT key and Press F10. A command windows should pop up:
    1. Type : diskpart
    2. Type: list disk
    3. Type: select disk #
      Where # is the # of your SSD on the list
    4. Type: clean
    5. Type: Exit
    6. Close Command Prompt Windows
    7. Continue with the installation, select Custom.
    8. Select the unallocated partition then click Next and let Windows create the needed partitions for installation.
      My System SpecsSystem Spec

  5. #5


    Posts : 8
    Win 8.1


    I did all what u said, Installation started, and after 50% I got error: Windows cannot install required files. The file may be corrupt or missing. Make sure that all the files required for installation are available and reset the installation. Error code:0x80070570

    Also, I saw that 2 discs where created... primary partition and system, but there is no recovery disc.

    Plz help
      My System SpecsSystem Spec

  6. #6


    Posts : 8
    Win 8.1


    Quote Originally Posted by topgundcp View Post
    I guess you formated your SSD as an MBR style partition. I suggest that you boot from the installation disk again. On the first screen, hold SHIFT key and Press F10. A command windows should pop up:
    1. Type : diskpart
    2. Type: list disk
    3. Type: select disk #
      Where # is the # of your SSD on the list
    4. Type: clean
    5. Type: Exit
    6. Close Command Prompt Windows
    7. Continue with the installation, select Custom.
    8. Select the unallocated partition then click Next and let Windows create the needed partitions for installation.

    Ok this was the right solution !!! THANKS so much...

    I was getting Error code:0x80070570 because my memory was on XMP profile, and as soon as I reset i it back to default, setup was finished without errors. Thanks so much for help
      My System SpecsSystem Spec

  7. #7


    San Jose - California
    Posts : 2,847
    8.1x64PWMC Ubuntu14.04x64 MintMate17x64


    Great. Glad you got sorted.
      My System SpecsSystem Spec

  8. #8


    Posts : 879
    Windows 10


    Quote Originally Posted by MegaTheJohny View Post
    I have Asus Rampage Extreme V board.
    Quote Originally Posted by MegaTheJohny View Post
    Now, I can't even choose partition to start Windows installation. (I have message "The selected disk is of the GPT partition style)
    The Asus motherboard UEFI firmware (BIOS) settings. -> link

    You need to select to boot from the UEFI type (marked UEFI in the boot menu) if you want to install Windows 8 in UEFI boot mode (see screenshot below).

    - You do not need to change the boot order of drives in your computer's UEFI firmware (BIOS).
    - Connect your Windows 8 64-bit USB flash drive (Note: FAT32 file system) or insert your Windows 8 64-bit DVD.
    - Restart the computer.
    - Press F8 to enter the boot menu.
    - Select to boot from the "UEFI: USB/DVD device name".

    If you can see "UEFI: USB/DVD device name" option in the boot menu, then you don't need to change anything in the UEFI firmware (BIOS).



    After the installation is completed, you can check if Secure Boot option is enabled in the UEFI firmware (BIOS).
    - Run the following command as administrator from the command prompt:

    powershell confirm-SecureBootUEFI

    The result should be True.

    Here is more info: Installing using UEFI Boot Mode or Legacy BIOS Boot Mode.
      My System SpecsSystem Spec

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