Windows 8 and 8.1 Forums

Windows 8.1 upgrade

  1. #1


    Posts : 2
    Windows 7

    Windows 8.1 upgrade


    Hi,

    I have just purchased a new desktop computer.

    It came with Windows 7 installed, but a disc to upgrade to Windows 8.1.

    I followed the instructions to upgrade to Windows 8.1 and everything went fine until I hit the following error message [see images below].

    Any ideas?

    Thanks.

    Gary
    Click image for larger versionClick image for larger version

      My System SpecsSystem Spec

  2. #2


    Posts : 2,690
    Windows 3.1 > Windows 10


    if you are trying to upgrade from windows 7 to windows 8.1 > boot into windows 7 and then run the windows 8.1 setup.exe
      My System SpecsSystem Spec

  3. #3


    Posts : 2
    Windows 7


    Thank you for your reply, but I have tried that and it simply fails to install and then boots back to Windows 7.
      My System SpecsSystem Spec

  4. #4


    Quote Originally Posted by garytonsley View Post
    Thank you for your reply, but I have tried that and it simply fails to install and then boots back to Windows 7.
    Well this it seems that your have a UEFI GPT Windows 8.1 DVD and your system is BIOS MBR. So you will need to Clean Install your windows 8.1.
    You'll need to got to the Support website for your computer and download the latest 8.1 hardware drivers for you computer. Then use the tutorial to install UEFI.
    KYHI I can't find the best tutorial for this do you know which one it is?
      My System SpecsSystem Spec

  5. #5


    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 13:31.
      My System SpecsSystem Spec

  6. #6


    Posts : 2,690
    Windows 3.1 > Windows 10


    not sure where you got the "disk" but you can download and create new windows 8.1 setup media > Create installation media for Windows 8.1 - Windows Help

    do not boot from the media (clean install) but rather just run setup.exe from the media..

    your system should already be booted into windows 7 - so you should not even be getting that error..

    Also if your present system is 32bit (x86) you need to use 32bit (x86) windows 8.1 to upgrade from 7 to 8.1

    you can not upgrade from 32bit x86 to 64bit x64 windows OS without doing a clean install..
      My System SpecsSystem Spec

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