Windows 8 and 8.1 Forums


How do i install windows 8 on to a drive that uses mbr?

  1. #1


    Posts : 13
    windows 7

    How do i install windows 8 on to a drive that uses mbr?


    Windows 8 says it the drive has to be GPT Do I need to format the drive install windows 8? what happens to that 200mb drive on the boot drive when I format the drive?

      My System SpecsSystem Spec

  2. #2


    Posts : 879
    Windows 10


    Quote from this post: UEFI Boot Mode (installing using the GPT partition style) and Legacy BIOS Boot Mode (installing using the MBR partition style). -> link

    Tip   Tip
    Error message when you boot from the Windows installation media in Legacy BIOS Boot Mode:

    Windows cannot be installed to this disk. The selected disk is of the GPT partition style. (see screenshot below)

    That is because Windows can only be installed to MBR disk in Legacy BIOS Boot Mode, but you plan to install Windows on a GPT disk.

    - Boot from the Windows installation media in UEFI Boot Mode, so you can use GPT (GUID Partition Table).
    - But if you want to use MBR (Master Boot Record) partition table, then delete all partitions on the disk.

    Click image for larger version

    Error message when you boot from the Windows installation media in UEFI Boot Mode:

    Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks. (see screenshot below)

    That is because Windows can only be installed to GPT disk in UEFI Boot Mode, but you plan to install Windows on an MBR disk.

    - Delete all partitions on the disk, so you can use GPT (GUID Partition Table).
    - But if you want to use MBR (Master Boot Record) partition table, then boot from the Windows installation media in Legacy BIOS Boot Mode.

    Click image for larger version
    Last edited by genet; 13 Nov 2015 at 13:19.
      My System SpecsSystem Spec

  3. #3


    Posts : 13
    windows 7


    I had it set to uefi boot mode. and os set to other. Should I set the bios os to windows 8 when installing and use uefi+legacy?
      My System SpecsSystem Spec

  4. #4


    Posts : 879
    Windows 10


    If you want to install only Windows 8/8.1 64.bit -> Secure Boot and Windows 8 Activation
      My System SpecsSystem Spec

  5. #5


    Posts : 2,690
    Windows 3.1 > Windows 10


    If you want to use MBR partitions - select legacy support - OS other

    By selecting UEFI - you are selecting GPT partitions

    Windows 8 / 8.1 prefer UEFI - GPT

    I would just boot from setup media and allow windows setup to do it's thing - setup will create all the needed GPT partitions

    That is unless you really need to have MBR partitions - then you need to boot legacy mode - UEFI disabled
      My System SpecsSystem Spec

How do i install windows 8 on to a drive that uses mbr?
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