And with Big Sur, Apple has added encryption and a signature to the system partition. The system and user data are separated and housed in two different logical spaces.
The new macOS has completed an evolution that appeared with Catalina.
In the current situation, SuperDuper! 3.3.1 is not able to make a bootable clone of a Mac (Intel, for M1s is something else) upgraded to macOS Big Sur. The editor of SuperDuper! has a tricky solution for those who use its software to clone a Big Sur volume.
