As I understand things, partuuid is *only* useful in the case of something like bios_grub which does not have any filesystem on it in which case a GPT uuid is useful.
ESPs will have GPT uuid; though in generally I think /dev/disk/by-id symlinks are just as good as persistent links to the ESP and provide more information in their naming scheme than a UUID.
Neat.
As I understand things, partuuid is *only* useful in the case of something like bios_grub which does not have any filesystem on it in which case a GPT uuid is useful.
ESPs will have GPT uuid; though in generally I think /dev/disk/by-id symlinks are just as good as persistent links to the ESP and provide more information in their naming scheme than a UUID.