I will add that after a few restarts I hit the bug where the drive is not mounted. I can now run the following command and I am in business: sudo k...

And this kids, is why you should always erase your disk when you upgrade the OS and manually bring everything in as needed. Don't trust the OS vendor...

Thank you for replying last night. That is amazing support. TLDR: I am waiting for Big Sur to reinstall. That process ran into trouble too. I c...