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  1. #1
    New Lounger
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    Unhappy Nov upgrade error: "unsupported disk layout for UEFI firmware"

    Hi, all.

    The November upgrade didn't appear for me in Windows Update, so I downloaded the Media Creation Tool. Having downloaded everything, it reported:
    Windows can't be installed because this PC has an unsupported disk layout for UEFI firmware.

    I have a new computer (three months old) that came with Windows 10 installed on an SSD with only a single partition.

    Google yields little that's up-to-date or helpful.

    Does anyone have suggestions?

    Thanks in advance,
    Tim.

  2. #2
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    Ask the manufacturer as it's a new machine. (Sorry to send you away, but it seems to be something the manufacturer has done with the set up.)

    cheers, Paul

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    TimFromPerth (2015-11-28)

  4. #3
    WS Lounge VIP Calimanco's Avatar
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    It appears to be caused by the reappearance of an earlier problem with Windows setup.

    http://answers.microsoft.com/en-us/i...=1426811995041

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    TimFromPerth (2015-11-28)

  6. #4
    New Lounger
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    Thanks for the responses.

    Tim.

  7. #5
    WS Lounge VIP Coochin's Avatar
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    @ TimFromPerth

    Laptop or desktop? If laptop please state brand and model number. If desktop please state brand and model number of motherboard.
    Computer Consultant/Technician since 1998 (first PC was Atari 1040STE in 1988).
    Most common computing error is EBKAC: Error Between Keyboard And Chairback
    AMD FX8120 (8-core @ 3.1GHz) CPU, Gigabyte GA-990FXA-D3 motherboard, 8GB (2x4GB) DDR3 1866MHz RAM, ATI-AMD Radeon HD6770 PCI-E VGA, 480GB Kingston SSD, 2TB Seagate SATA3.0 HDD, ASUS DVD/RW.

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    TimFromPerth (2015-11-28)

  9. #6
    New Lounger
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    It's a desktop machine. Custom configuration. Asus Z170-AR motherboard.

  10. #7
    jwoods
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    Creating an MSR partition also worked for this person...

    https://moln1.wordpress.com/2015/03/...nical-preview/

  11. #8
    WS Lounge VIP Coochin's Avatar
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    Quote Originally Posted by TimFromPerth View Post
    ...Asus Z170-AR motherboard.
    I looked up that motherboard on the ASUS support website. Fairly decent motherboard, and it looks like it was released mid-2015, so the motherboard's UEFI shouldn't be a problem. Nevertheless, there are UEFI ("BIOS") updates listed.

    Also looked up the error "Windows can't be installed because this PC has an unsupported disk layout for UEFI firmware" which returned many results, most about Technical Preview Build 10041 (old build) but generally the fix seems to be as suggested in the link in jwoods #7 post, i.e.: create a "Microsoft Reserved" partition.
    Computer Consultant/Technician since 1998 (first PC was Atari 1040STE in 1988).
    Most common computing error is EBKAC: Error Between Keyboard And Chairback
    AMD FX8120 (8-core @ 3.1GHz) CPU, Gigabyte GA-990FXA-D3 motherboard, 8GB (2x4GB) DDR3 1866MHz RAM, ATI-AMD Radeon HD6770 PCI-E VGA, 480GB Kingston SSD, 2TB Seagate SATA3.0 HDD, ASUS DVD/RW.

  12. #9
    5 Star Lounger
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    I recall seeing similar issues for some during the beta process and it was a problem on the MS side. If you do a web search on the phrase "unsupported disk layout for UEFI firmware" you should find several.

    There was also a similar problem for some people when Win10 first arrived and people were updating from Win8. I believe that some of them needed a firmware update - that's what I would look at first.
    Graham Smith
    DataSmith, Delaware
    "For every expert there is an equal and opposite expert.", Arthur C. Clarke (1917 - 2008)

  13. #10
    jwoods
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    Quote Originally Posted by Coochin View Post
    ...but generally the fix seems to be as suggested in the link in jwoods #7 post, i.e.: create a "Microsoft Reserved" partition.
    @Calimanco mentioned it in post #3.

    Several threads on the Internet referred to the link in that post as a solution for Windows 10.

    The link in post #7 was another example of solving it by creating an MSR.

    Other solutions for Window 10 were..

    1. Turn off UEFI.

    2. Change the drive from MBR (master boot record) to GPT (GUID partition table).

    However, the MSR seemed to be the most recommended.
    Last edited by jwoods; 2015-11-28 at 17:21.

  14. #11
    3 Star Lounger djohnson's Avatar
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    If you have ISO and USB thumb drive here is what you do.
    1) Open powershell or command prompt as administrator
    2) type in diskpart then press enter (I will just list the commands, always press enter.)
    3) list disk
    4) sel disk (number of your thumb drive, no parenthesis.)
    5) clean
    6) create part pri
    7) sel part 1
    8) format fs=fat32 quick THIS IS FOR UEFI
    format fs=ntfs quick THIS IS FOR BIOS
    9) assign
    10) active
    11) exit

    Then all you do is copy all of the files from a mounted ISO to the thumbdrive. When you boot your machine should pick it up. You may have to select first boot device to USB in your UEFI settings. Then you just install Windows. I have done this many times.

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