Frans,
I ran /bin/archdetect on both my system and my MiniMac and in both cases
got:
i386/generic
So it appears even on the Mac that /lib/partman/lib/disk-label.sh doesn't
take the Mac path in:
i386)
case "$sub" in
mac)
echo gpt;;
*)
echo msdos;;
Perhaps this was different on the older Intel Macs without the CSM BIOS.
So it seems I need to look at archdetect now.
Just FYI.
Charles.