There was some recent traffic regarding the suitability of SuperDuper making 
backups in Big Sur.
For an up to date explanation of the situation this posting on the ShirtPocket 
website is quite informative.

https://www.shirtpocket.com/blog/index.php/shadedgrey/thats_big_sir_to_you/ 
<https://www.shirtpocket.com/blog/index.php/shadedgrey/thats_big_sir_to_you/>

robin
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