sources\install.wim in recent releases of Windows 10 has exceeded FAT32’s maximum filesize of 4 GiB. If you only boot UEFI systems and you want to use memory sticks for better performance while installing, you must split
sources\install.wim into smaller files. Luckily, the
dism command can do this for you.
- Start by creating a new temporary directory, say
- Mount your
.isofile in a virtual DVD drive by doubleclicking the file in Windows’ File Explorer.
- Copy all files and directories from the virtual DVD drive to the temporary directory.
cmd.exewith elevated privileges, e.g. Win+R, type in
cmd, and hit this key combination Ctrl+Shift+Enter.
c:and hit the enter key.
cd \W10-EN-20H2-splitted\sourcesand hit the enter key.
dism /Split-Image /ImageFile:install.wim /SWMFile:install.swm /FileSize:4095and hit the enter key. This will create the two files
install2.swm. Additional files might be created for future releases of Windows 10.
del install.wimand hit the enter key.
exitand hit the enter key.
- Use ImgBurn or your favorite tool for creating
.isofiles and create a new
.isofile for this new distribution. Ensure you only include the contents of the
- Use Rufus or your favorite tool for creating bootable memory sticks and point it to the newly created
.isofile. You’ll notice Rufus allow us to use FAT32 as the main filesystem, not NTFS.
- Delete the temporary directory created in step 1 at your own discretion.