EDIT: I just realized no of the bellow helps you if you are not on Windows =( The documented way to work around the 4GB limitation is to use the dism.exe /Spli

EDIT: I just realized no of the bellow helps you if you are not on Windows =( The documented way to work around the 4GB limitation is to use the dism.exe /Split-Image command. This will turn the one large .wim file into multiple smaller files. https://docs.microsoft.com/windows-hardware/manufacture/desktop/split-a-windows-image--wim--file-to-span-across-multiple-dvds https://docs.microsoft.com/windows-hardware/manufacture/desk... I ran into this when I was working on SimpleDiskImager. It is my disk image writer that tries to find a balance between dd's literal-minded copying of bytes (which does not correctly handle GPT partitioning) and the opinionated and invasive modifications that Rufus makes (not yet compatible with secure boot). I have not yet integrated support for writing Windows installer ISOs yet, but you can see the start of it in the ConvertEfiIsoToFat directory. https://github.com/AustinWise/SimpleDiskImager https://github.com/AustinWise/SimpleDiskImager