In older FAI versions, the partition containing the live image would be given a type “cd” (that's actually 0xCD because it seems there is no appropriate partition type for ISO 9660 images). The current version sets the type to 0, which means “empty”. This is problematic when using for instance Windows to add an extra partition to a USB stick that has the FAI installer dd'ed to it. Windows will treat the “empty” partition as true empty space and discards the partition entry entirely when writing the new table. The result is that the USB stick becomes unbootable because dracut can no longer find the live partition, it instead tries to boot from the EFI partition which results in:
mount: /run/initramfs/live: unknown filesystem type 'vfat' dracut: FATAL: Failed to mount block device of live image dracut: Refusing to continue Was there any specific reason to drop the ‘cd’ partition type? This was obviously a wrong type, but at least it prevented disk utilities from throwing it away. fdisk seems to agree: “Type 0 means free space to many systems. Having partitions of type 0 is probably unwise.” Regards, Alexander
