Comment 9 for bug 1865515

@Jeff MAAS uses the same bits as what the ISO uses. What is different is how local booting happens with MAAS vs with the ISO. When installed with the ISO the local boot process is UEFI Firmware -> Shim(from disk) -> GRUB(from disk) -> Boot local kernel. When installed with MAAS the local boot process is UEFI Firmware -> Shim(from network) -> GRUB(from network) -> Shim(from disk) -> Grub(from disk) -> Boot local kernel. The chain of trust when switching going from GRUB(from network) to Shim(from disk). I suspect but haven't verified that this may be due to the shim not being signed with a key GRUB has.