How can I access this without formatting it.

      • I mean, I’ve seen my fair share of UEFI weirdness. On my PC there’s a UEFI variable that contains the UEFI password (xor-encrypted with a well-known key), for example. If that’s the level of quality I should expect from motherboard developers, I would 100% believe that there’s a failure path from UEFI to disk mounting errors.