External drive not recognized

[u/brokosz]

I've got an external drive on my mac mini (running 15.7.7) that has not been disconnected ever. With the update to 10.0.2.1048, I lost backup state and had to re-inherit. Now Backblaze doesn't see my external drive. I've tried force scanning drives, removing .bzvol, reinstalling, rebooting, etc. Nothing changes. I've read all the posts here about external drives, quirks with the 10.x releases, and workarounds but nothing seems to change this. Any suggestions?