Hey guys, I've ben living with this problem for… well as long as I can remember, and it's finally time to fix it. I have two computers using one Time Machine Disk. The physical disk is connected to my Mac Mini, and it's shared over the network to my MacBook Air. The picture below is the backup disk in case you didn't guess. The notebook is my MacBook Air: — Snip — So the MacBook Air backs up just fine, but every time my Mac Mini tries to back up, it pops up with "Would you like to reuse the backup "*DIRECTORY TO MACBOOK AIR'S BACKUP*" with this computer?" also shown in the picture below. So I click "Create new backup" and it seems to backup in the Mac Mini's backup folder like it should… until next time. — Snip — I just want it to back up normally, both of them, without asking me anything first. Until now, I've just disabled automatic backups for my Mac Mini and would backup whenever I felt needed.