Time Machine refuses to connect
I have a 2015 21.5" iMac. Was running Catalina off an external Samsung T5. Decided to perform a Nuke & Pave on my internal (con)Fusion Drive and install Big Sur. I am only bringing in apps as needed. Since installation, Time Machine claims it can't accept the disk I have assigned. It is the same external I used with Catalina. Time Machine is turned off in Catalina. The external was already formatted to APFS. Any ideas? If it means anything, Backblaze has also been hinky on and off.
Now that's disconcerting. When I click the 'Applications' folder on the internal/Big Sur drive it's empty. But if I do the 3-finger pinch on my MagicTrackpad, there are my apps. EXCEPT 'Utilities''.
When I click on my external/Catalina boot drive all my applications are listed. EXCEPT 'Utilities'. Extra strange, when I ran Time Machine off of the external boot drive it worked flawlessly for a year!
A real poser. Now my head's really beginning to hurt.