Or is there any other reason why it is not such a good idea?
Here's one: the target device might not be an SD card.
Despite its name the source and target device can be any block device: an SSD, an HDD, an image file, a network block device, etc. PARTUUID will work (with the possible exception of a network block device or image file) for every block device a Pi can boot from.
Statistics: Posted by thagrol — Wed Jan 21, 2026 6:03 pm