I'm really liking Big Sur so far, but one thing I've noticed is that it takes several minutes to eject my external Time Machine drive, and on several occasions it hasn't ejected at all, I've had to force eject.
I have two external drives connected most of the time, one is Time Machine and the other has my large files on it like movies and software etc. When I want to take my laptop away from my desk, I eject both together. The external disk ejects normally after a couple of seconds, but the Time Machine disk either takes ages, or won't eject at all. The drive is not in the middle of a backup or 'cleaning up', I make sure it has finished before trying to eject.
Has anyone else this since installing big Sur? It wasn't happening under all previous OS X versions.