I have searched the forums and read the docs linked in relevant posts. None seem to apply well, and I'm still having trouble.
Added a new drive to my system, pre-clear completed successfully. Drive shows Unmountable. Tried to format, got this error:
Caution: invalid backup GPT header, but valid main header; regen
backup header from main header.
Caution! After loading partitions, the CRC doesn't check out!
Warning! Main and backup partition tables differ! Use the 'c' an
on the recovery & transformation menu to examine the two tables.
It's a new, empty disk so I tried gdisk to remove all partitions and add a fresh one. This was completed successfully, but I still cannot format the drive. Diagnostics attached.