I can't install W10. It says my disk is not valid.


  1. kmint
    Posts : 118
    Windows 10 x64
       New #1

    I can't install W10. It says my disk is not valid.


    Hi,

    I never saw something like this. It says that there is someproblem with my disk, in all of the partitions.

    I can't remember the exact message, but it was something with an acronym such as GTMP problem.

    This laptop is one year old, runs 8.1 and have installed lots of times Windows or Linux in it.

    The iso copy is fine, the problem has to be another.

    Thanks.
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  3. genet
    Posts : 107
    Windows 10
       New #2

    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.

    I can't install W10. It says my disk is not valid.-windows-cannot-installed-disk.-selected-disk-gpt-partition-style.png

    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.

    I can't install W10. It says my disk is not valid.-windows-cannot-installed-disk.-selected-disk-has-mbr-partition-table.png
    Last edited by genet; 13 Nov 2015 at 13:27.
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  4. kmint
    Posts : 118
    Windows 10 x64
    Thread Starter
       New #3

    That's it, exactly.

    Thanks a lot.
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  6. genet
    Posts : 107
    Windows 10
       New #4

    You are welcome.
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  7. kmint
    Posts : 118
    Windows 10 x64
    Thread Starter
       New #5

    *EDIT: Solved.
    Last edited by kmint; 25 Dec 2014 at 05:23. Reason: solved
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