> > I commented out those entries in /etc/auto.master before modifying the > fstab entry: > > UUID=259ec5ea-e8a4-465a-9263-1c06217b9aaf /mnt/backup > ext4,x-systemd.automount,x-systemd.idle-timeout=15min noauto 0 2 That's not correct. See 'man fstab'. It should be device mount-point filesystem-type options dump fsck So you should have: UUID=259ec5ea-e8a4-465a-9263-1c06217b9aaf /mnt/backup ext4 x-systemd.automount,x-systemd.idle-timeout=15min,noauto 0 2 > > which is exactly as it was before except for the x-systemd entries as you > described. Yeah, you put them in the wrong place. P.