I came to the forum to report a mysterious "could not locate the Destination volume" failure this morning. I'll add on to this thread rather than open a parallel one. Although I could quietly recreate my scheduled copy, perhaps my scenario will yield a useful clue for Dave or others.
Wednesday:
- Daily smart update of my boot drive ran at 4:30 am (Hobbes --> Hobbes A).
- Mid-day: shutdown my Mac because the electric company shut off our power for 20 minutes. Just to be extra safe, I powered down all external hard drives, including Hobbes A and Neptune 160.
- Powered my Mac up 30 minutes later. Powered up some external HDs, but excluded Hobbes A (oversight) and Neptune 160 (intentional - not needed).
Thursday:
- Greeted with a "Copy Failed" in the morning because Hobbes A could not be located.
- Powered on Hobbes A, which mounted fine. "Everything will be fine tomorrow morning," I thought.
Friday (today):
- Greeted again with a "Copy Failed" because Hobbes A could not be located. But it's mounted. Hmmm.
- Clicked "Copy Now" to kick off the missed copy. This reported a different "Copy Failed" message: "Copy of Hobbes to Hobbes A failed. SuperDuper! got an error: Can't get current settings."
- Quit SuperDuper!
- Relaunched SuperDuper!, which first reported "Neptune 160" was missing. Dismissed that message, and SuperDuper! reported "Passport" was missing. Dismissed that second message. (I'd done a manual copy of Neptune 160 to Passport about 2 weeks ago. Passport was removed after that, but Neptune 160 was left mounted until Wednesday.)
- Clicked "Copy Now" -- Smart Update copied 5000+ files from Hobbes to Hobbes A without a problem.
- Quit SuperDuper!
Let's see what happens tomorrow morning.
-- Ward