SuperDuper's interface confirms all your actions in simple, clear language to ensure that the end result is exactly what you intended. Take a look, and click for additional screen shots!

RELEASE NOTES
Details are in the Revision History, but to highlight a few things: Backup on Connect no longer runs over and over if you use Erase, then copy on Big Sur. This had to do with some very low-level changes to some Big Sur APIs that messed with our code that detected whether we were already running a copy for that volume.
The bug was useful for testing a zillion back-to-back Erase, then copies, though, so there's that. Yeah! We meant to do that! Sure!
Erase, then copy was using asr to copy Catalina, which was unintentional. It now does the same thing v3.3.1 did.
Send to Shirt Pocket was failing for users in all versions of SuperDuper due to an locally cached response of a value that had been updated on our server. This turned out to be rather interesting, and frustrating, because we don't have a way of "fixing" old copies...although they will "fix themselves" over time...anyway, it won't happen any more in v3.5 B2 and later.

Supported Operation Systems:
OS X 10.10 or later

HOMEPAGE

http://www.shirt-pocket.com