Thanks, Dave. So in order to clone a TM drive, both drives must be formatted with Mac OS Extended (Journaled). If one or both drives are APFS then cloning cannot be done.
I don't think I would change my TM backup to Mac OS Extended (Journaled) just for this purpose. Seems like for my use case as described above, there's no easy and risk free way to make a duplicate of my TM drive before proceeding with the restore process.
|