I can't offer any specific advice on how to partition your disk or get the Windows installer to launch and recognize the files on the NTFS volume. To use it, you'd need to either load it manually from an EFI shell or use rEFInd to launch it automatically. The Clover EFI Tools package (available from this forum thread) includes an NTFS driver for EFI however, I don't know the provenance of that driver, so I'm providing this pointer only reluctantly. OTOH, if install.wim must be read while the EFI is still running, there may be a way to do it. My suspicion is that this is how it works however, I don't know enough about the Windows installer to suggest how to point it to install.wim on a specific partition. Once the Windows kernel has loaded (and loaded its filesystem drivers, if they're in separate files), Windows should be able to read NTFS volumes just fine. This allows the installation of Windows media that contain an install.wim larger than 4GB and other stuff.įor more on this see the UEFI:NTFS project on github.įirst, what reads the install.wim file you mention? If it's read after the Windows kernel has taken control of the system, it shouldn't be necessary to put the file on the EFI System Partition (ESP), which must be FAT. The way it works is by adding a small (256KB) FAT partition at the end of the drive that contains am EFI executable that loads a Free Software (GPLv3) NTFS EFI driver and hands over the boot to the regular EFI bootloader on NTFS partition.
In this case, you will just have to copy an /efi/boot/boot圆4.efi or /efi/boot/bootia32.efi on the NTFS partition for your system to boot from NTFS. Outside of using Windows installation media, you can also create a "blank" NTFS bootable UEFI drive when running Rufus in advanced mode (enabled by clicking the while triangle near Format Options) by selecting UEFI:NTFS as the boot option. If you select a Windows installation ISO, set the partition scheme to GPT partition scheme for UEFI computers and also set the file system to NTFS, Rufus will add everything required to allow booting NTFS partition from an UEFI system.
The latest version of Rufus allows seamless UEFI boot from an NTFS partition.
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