Windows 8 and 8.1 Forums


Split large install.wim image for GPT (fat32)

  1. #1


    Posts : 5
    windows 8.1 x64

    Split large install.wim image for GPT (fat32)


    I would like to integrate updates and drivers to my windows 8.1 x64 image and install it as GPT/UEFI.

    Latter requires fat32, which has trouble accepting the install.wim, grown over 4GB in the integration process. I've read on a few sites that splitting it using the /split image doesn't work for windows 8(.1).

    Has anyone tried it recently? Is there any way to install a 4+GB image on GPT?

      My System SpecsSystem Spec

  2. #2


    Try using exFat https://en.wikipedia.org/wiki/ExFAT it's compatible with Fat32 but can accept files greater than 4GB.
      My System SpecsSystem Spec

  3. #3


    Posts : 5
    windows 8.1 x64


    Quote Originally Posted by CountMike View Post
    Try using exFat https://en.wikipedia.org/wiki/ExFAT it's compatible with Fat32 but can accept files greater than 4GB.
    UEFI is not compatible with exfat
      My System SpecsSystem Spec

  4. #4


    The latest verion of Rufus creates a small FAT32 partition to store an NTFS driver - and installs from a NTFS partition on UEFI systems.

    I haven't tried it myself, but got it from the developer. Maybe worth a try.
      My System SpecsSystem Spec

  5. #5


    Posts : 5
    windows 8.1 x64


    wow, sounds interesting! I found the description, I hope it works well... Anyway, this driver is not retained in the final system - I guess/hope once the installation succeeds, it will be as good as any "official" way.
    Quote Originally Posted by Superfly View Post
    The latest verion of Rufus creates a small FAT32 partition to store an NTFS driver - and installs from a NTFS partition on UEFI systems.

    I haven't tried it myself, but got it from the developer. Maybe worth a try.
      My System SpecsSystem Spec

  6. #6


    Posts : 2,690
    Windows 3.1 > Windows 10


    from cmd prompt (admin)

    Dism /Split-Image /ImageFile:C:\temp\install.wim /SWMFile:C:\temp\install.swm /FileSize:3800

    change command to point to your install.wim
      My System SpecsSystem Spec

  7. #7


    Posts : 5
    windows 8.1 x64


    One piece of info i missed and finally found: you need an ei.cfg to make it work: UEFI Install of Windows 8 All-in-One from a single-partition FAT32 USB drive - Windows 8 - reboot.pro

    Quote Originally Posted by KYHI View Post
    from cmd prompt (admin)

    Dism /Split-Image /ImageFile:C:\temp\install.wim /SWMFile:C:\temp\install.swm /FileSize:3800

    change command to point to your install.wim
      My System SpecsSystem Spec

  8. #8


    Quote Originally Posted by tamas970 View Post
    wow, sounds interesting! I found the description, I hope it works well... Anyway, this driver is not retained in the final system - I guess/hope once the installation succeeds, it will be as good as any "official" way.
    Quote Originally Posted by Superfly View Post
    The latest verion of Rufus creates a small FAT32 partition to store an NTFS driver - and installs from a NTFS partition on UEFI systems.

    I haven't tried it myself, but got it from the developer. Maybe worth a try.
    Yup... very cool - this is what it looks like in BootIce.

    Click image for larger version
      My System SpecsSystem Spec

Split large install.wim image for GPT (fat32)
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