Windows 8 and 8.1 Forums


UEFI Bootable USB Flash Drive - Create in Windows

  1. #40


    Posts : 5
    Windows7


    in the part where you have to copy the files from the iso to the flash drive. it says that the install.wim is too big for the flash drive. i cant understand what i did wrong and i used a 16 gb flash drive formatted using your instructions. Please help

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  2. #41


    Posts : 22,023
    64-bit Windows 10


    How large is the .iso file you are using, and where did you get it from?
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  3. #42


    Posts : 5
    Windows7


    also i have another question...

    as of now i installed Windows 7 x64 on my laptop using the legacy type bios via the windows dvd. If i burn a windows 8 x64 and install it using the legacy type bios as well, can i change the bios to uefi type after finishing the windows 8 install?

    Thanks for your time sorry i am a newb as i only encountered this uefi bios now

    Quote Originally Posted by Brink View Post
    How large is the .iso file you are using, and where did you get it from?
    a friend gave it to me it came from a windows 8 pro legit installation dvd. I think it is somewhat of 5gb +
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  4. #43


    Posts : 22,023
    64-bit Windows 10


    Sorry, but no. If you want to use UEFI, then both Windows 7 and 8 would have to be clean installed with UEFI instead.

    Did you purchase a Windows 8 product key?

    If so, then I would recommend downloading a new copy of the ISO file since a 64-bit Windows 8 Pro upgrade ISO should only be 2.9 GB if it came from Microsoft online.

    https://www.eightforums.com/tutorials...ad-create.html
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  5. #44


    Posts : 5
    Windows7


    yes i did. i thought i could just borrow my friend's copy since i have a slow connection. i guess i have no choice.

    Thanks for your time
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  6. #45


    Posts : 5
    Windows7


    Quote Originally Posted by Brink View Post
    Sorry, but no. If you want to use UEFI, then both Windows 7 and 8 would have to be clean installed with UEFI instead.

    Did you purchase a Windows 8 product key?

    If so, then I would recommend downloading a new copy of the ISO file since a 64-bit Windows 8 Pro upgrade ISO should only be 2.9 GB if it came from Microsoft online.

    https://www.eightforums.com/tutorials...ad-create.html

    yes i did. i thought i could just borrow my friend's copy since i have a slow internet connection. i guess i have no choice.

    Thanks for your time
      My System SpecsSystem Spec

  7. #46


    Posts : 22,023
    64-bit Windows 10


    You're welcome.

    You can download a 64-bit ISO from any 64-bit computer though.
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  8. #47


    Posts : 10
    Windows 7 Ultimate x64


    I can't get the USB to boot When I boot the USB drive it just says that windows failed to start. It mentions the file \EFI\Microsoft\Boot\BCD and the status 0xc000000d and info: An error occurred while attempting to read the boot configuration data. The USB will boot when UEFI is disabled and changed to Legacy BIOS but it will not let me install. Also in step 11 it mentions the file "sources\install.wim\1\Windows\Boot\EFI\bootmgfw.egi". However I cannot find any file as such - just bootmgfw.efi not .eg​i Is this a typo or not??
    Last edited by jamerst; 25 Jan 2013 at 11:10.
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  9. #48


    Germany
    Posts : 24
    Windows 8 Pro x64


    Quote Originally Posted by jamerst View Post
    I can't get the USB to boot When I boot the USB drive it just says that windows failed to start. It mentions the file \EFI\Microsoft\Boot\BCD and the status 0xc000000d and info: An error occurred while attempting to read the boot configuration data. The USB will boot when UEFI is disabled and changed to Legacy BIOS but it will not let me install. Also in step 11 it mentions the file "sources\install.wim\1\Windows\Boot\EFI\bootmgfw.egi". However I cannot find any file as such - just bootmgfw.efi not .eg​i Is this a typo or not??
    I had similar problem. I solved it by using the Upgrade Assistant or whatever it's called. It created automatically a windows 8 image on my usb stick and it happened to be UEFI as well. My uefi bios recognized it without a problem and i didn't do anything, i just pointed which usb flash drive to use
    It's probably the windows image that you're using. Try a legit untouched copy, those on torrent sites aren't untouched or use the Upgrade Assistant like i did.
      My System SpecsSystem Spec

  10. #49


    Posts : 10
    Windows 7 Ultimate x64


    I'm using an untouched version as far as I know (it is the legal ISO from digitalriver) and I'm trying to install windows 7 not 8.
      My System SpecsSystem Spec

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UEFI Bootable USB Flash Drive - Create in Windows

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