[Solved] Windows 8.1.1 UEFI Boot Problem

Discussion in 'Windows 8' started by cool_recep, Jul 20, 2014.

  1. cool_recep

    cool_recep MDL Novice

    Oct 21, 2012
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    I was really suprised about how no one noticed that you can not UEFI boot with most PCs using 8.1.1. You have to use 8.1.

    I have just checked and saw that 8.1.1 has new UEFI bootloader and most of the PCs does not recognize it. Yet 8.1 boots fine with UEFI.

    Can I replace the UEFI bootloaders to get proper UEFI support with 8.1.1 ?

    To be more specific, for example, my 2014 BIOS updated Rampage IV Gene mobo can boot 8.1 USB via UEFI but can not detect 8.1.1 USB as UEFI.

    I can use another flash drive with Clover UEFI installed. And there I can trigger UEFI bootmgr from the USB drive which is complicated and painful :)
     
  2. maxb2000

    maxb2000 MDL Member

    Aug 5, 2012
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    Are you sure that the USB device has been formated with FAT32 ?
     
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  3. murphy78

    murphy78 MDL DISM Enthusiast

    Nov 18, 2012
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    Requirements for UFD UEFI booting are:
    boot.wim with bootable index x64 version
    bootmgr.efi from x64 image
    bootx64.efi in efi\boot folder
    efi\microsoft\boot\bcd pointed to winload.efi in boot image
    GPT partitioned UFD
    Fat32 formatted primary partition on UFD
     
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  4. cool_recep

    cool_recep MDL Novice

    Oct 21, 2012
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    I was using WintoBootic and it was working fine with 8.1. But wih 8.1.1, I had problems. FAT32 is bulss**t. I have always used NTFS USB and it booted fine with UEFI. But Wintobootic might not support 8.1.1. I will check it out. hanks
     
  5. Snuffy

    Snuffy MDL Expert

    Jan 7, 2008
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    Some of the new UEFI systems will not boot properly if not FAT32...
    Murphy78 gave 100% correct... works for me...
    Thanks Murphy78 :)
     
  6. Tito

    Tito Super Mod / Adviser
    Staff Member

    Nov 30, 2009
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    Not mandatory, it can be MBR partitioned.

    Impossible without supplying additional NTFS driver for UEFI.
     
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  7. cool_recep

    cool_recep MDL Novice

    Oct 21, 2012
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    Ok guys. Thans for the info. Solved the problem by using Rufus. Select the second option from the dropdown list and you got it.
     
  8. goldfinger

    goldfinger MDL Junior Member

    Dec 29, 2010
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    Some motherboard UEFIs have NTFS drivers built in. I know my MSI Z77 mobos do. But yeah, it's safe to use FAT32.
     
  9. Mr.X

    Mr.X MDL Guru

    Jul 14, 2013
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    #9 Mr.X, Jul 22, 2014
    Last edited: Jul 22, 2014
    Oh my...!! This is what ALL mobos makers should do. I don't know who had the "great" idea of fat32 limitation in the first place but I want to hang him/her on the gallows :mad: