I am setting up a multi-user laptop for my wife, with me as an admin user in addition to her account. This is to wean her off windoze, so must be bomb-proof. Hence I want to set up timeshift, which I've not used before.
I'm not clear what permission etc are needed for the backup volume, and usually fail the first 3 or 4 times to get them right when I try to wing it. I have a spare 30 G FAT partition on the SSD that I'd like to use the backup volume.
I would guess that I need to edit /etc/fstab to mount the partition, perhaps to /mnt/backup, each time the system boots, in order that timeshift can find it. Is this correct? Are there any reasons for using different mount point roots like /media or /opt that I've seen suggested?
What permissions and ownership would I need for the mount point?