Windows 10: Unsupported Disk Layout for UEFI firmware

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  1. Berton's Avatar
    Posts : 5,294
    Win10 Home and Pro, Win10 Insider Preview, WinXP Home Premium, Linux Mint
       19 May 2018 #31

    Using the MCT shown I use a 16GB Thumb drive, get the dual-version [x86/32-bit and x64/64-bit] then have room to store the updates as they come out for use on other computers such as those with slow or no Internet service.
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  2. AddRAM's Avatar
    Posts : 2,093
    Windows 7 Pro x64 Windows 10 Pro x64
       19 May 2018 #32

    Let`s not confuse him. Let`s just get the Iso downloaded and on the usb stick.
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  3.    19 May 2018 #33

    I've downloaded 1803 and put it on a USB drive with Rufus.
    Last edited by BobZ; 19 May 2018 at 18:25. Reason: added
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  4. AddRAM's Avatar
    Posts : 2,093
    Windows 7 Pro x64 Windows 10 Pro x64
       19 May 2018 #34

    OK, hopefully you`ve backed up your important data.

    OK so you have your computer up and running, now put the usb stick in a usb slot and open the usb stick with windows explorer. (It should do this automatically, but sometimes it doesn`t)

    It should look like this. Now just click on setup and the install/update will begin.

    Hopefully all goes well, when the PC reboots in a bit, pull the usb stick out or else it will start the install all over again. ( Do not walk away from the PC )
    Attached Thumbnails Attached Thumbnails Capture.JPG  
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  5. topgundcp's Avatar
    Posts : 2,435
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       19 May 2018 #35

    Here's my suspection of your problem:
    Your Windows 10 was upgraded from Windows 7 which has a 100 MB System Reserved partition, a 450 MB Recovery partition was created during this upgrade. Now Windows try to update to 1803, it might try to create another Recovery partition by shrinking your C drive.

    The problem with MBR disk is you can only have 4 partitions max and the 4th one will be created as Logical partition instead of a regular primary partition. Update might run into problem with this layout.

    A normal fresh install of Windows will have a 550 MB Systems Reserved and C drive.

    Since you've already have Macrium, you can use it to expand the System Reserved to 550 MB, delete the Recovery Partition then try to update to 1803 again.
    In addition, the Boot Drive Control is set to UEFI and Legacy OPRM. Is there other option besides this ? can you set to boot just Legacy only ? If yes, set it to boot for MBR only.
    Last edited by topgundcp; 20 May 2018 at 15:24.
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  6. AddRAM's Avatar
    Posts : 2,093
    Windows 7 Pro x64 Windows 10 Pro x64
       19 May 2018 #36

    I didn`t think Macrium could do those type of things, It looks like what you wanted to say didn`t show up

    Partition Wizard on the other hand will. Mike posted the link in reply #24

    I never run into these issues because I do not use a System Reserved partition.

    And yes, you can delete that Recovery partition, you don`t need it.
    Last edited by AddRAM; 19 May 2018 at 19:50.
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  7.    19 May 2018 #37

    OK. I started setup from the stick and it stopped with the message that Windows can't be installed because the PC has unsupported disk layout for UEFI firmware -- the same message i got when I started this thread. Macrium will resize partitions, I believe, but if the partition was too small why am I getting the error message about firmware?
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  8. AddRAM's Avatar
    Posts : 2,093
    Windows 7 Pro x64 Windows 10 Pro x64
       19 May 2018 #38

    Yes exactly what I`m wondering.

    I`ve been using Macrium Reflect for years ( the free version ) and I`ve never seen a way to use it to manage partitions.

    I`ve always used Partition Wizard Professional.


    I hope Navy sees this thread, he would know exactly what to do.
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  9. f14tomcat's Avatar
    Posts : 36,383
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       19 May 2018 #39

    Might be the disk is MBR and needs to be GPT to support UEFI installation. Easily fixed with MiniTool, or maybe Partition Wizard Pro you mentioned. UEFI needs more than 3 primary partitions, no "logicals". MBR format only supports up to 3. UEFI needs 4.
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  10. AddRAM's Avatar
    Posts : 2,093
    Windows 7 Pro x64 Windows 10 Pro x64
       19 May 2018 #40

    But why ?

    Nothing should have to be changed.
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