Can't add or subtract disks for Time Machine backups
I saw the previous comments about hovering over the disks to add or subtract them, but when I hover over the disks, nothing happens. Nothing. I've got old disks on here that I haven't used forever and can't see my current ones to do fresh backups. And there's no way to enlarge the window. Suggestions?
MicheleMontgomery’s MacBook Pro 15", MacBook Pro 13″