Leesureone: Update on my last post. I formatted a new drive with APFS - GUID. I created a thumb drive to install Big Sur. I put O.C.6.6.2 in the TD EFI folder. Booted NUC8i7BEH with TD chose Install Big Sur when OC came up with the Drive Selection screen. With a couple boots I had my Catalina OS installed. No.... that was not a typo or confusion. It gave me the option of Catalina so I installed CAT, which is what I wanted rather than Big Sur. The install has BT, NIC, and Hopefully all USB ports are working as intended. I will be finishing it up and testing. It is finally looking good again. I made a couple mistakes and there were a hiccup or two (NUC locked up), but I found it was relatively easy to do it that way. I only need to know if migrating my other drive will mess things up or should I install all programs newly and only copy over docs?