Weird situation. I noticed during a copy from a TB3 drive to the M1 Pro that the part where it counts the files for copying got slower than previously. Then adding Audible books to iBooks caused it to hang. The rest of the system responded OK, but it was "flaky" in parts. So I reboot...and the reboot hangs with the progress bar at half way. I tried several times, no reboot. tried safe mode. Same thing. Oh oh. Went into maintenence and ran Disk Repair. That also seemed to hang (though I might now have waited long enough, 20 minutes on a 1TB driuve), but the last thing it said was an error:
"Error: cross check"
...followed by a bunch of numbers. It never seemed to get past that, after several tries.
Then, suddenly, as quickly as it happened, it ended. It booted OK. Ran Disk Repair - no issues found. I ever ran the built in Diag program, and no issues. Its like nothing was ever wrong.
I know this is new tech, with its unified memory and such. But this was really odd.
Just wanted to report it to this thread, in case anyone else saw something similar.