OWC Thunderbay Mini unrepairable error after installing 15.3

[brentg33]

Hi - not sure if this is the correct forum to post - but I just installed 15.3 on my Mac Studio today.
I have an OWC thunder bay mini connected via thunderbolt -
I just started to get an error upon Mac start up and / or remounting the OWC drive that macOS can't repaid the drive.
The drive was working fine yesterday.
Is this an error anyone else with a OWC drive has encountered? if so - what was the fix?
I don't currently have room to move (over 500GB - Lightroom library) to a drive to re-format the OWC-
hoping there is another way to fix...

thanks

 

[benmuetsch]

Always disconnect any external storage while updating!

 

[maverick100]

OWC has two versions this thunder bay mini; Which model do you have? Thunderbolt 2 or thunderbolt 3?
I would b very careful. My suggestion is to shut your computer down. Disconnect the thunderbolt cables from the computer; disconnect the power adapter and thunderbolt cables from the enclosure. Let the enclosure sit for a few minutes then connect the power cable; give it a minute, then connect the Thunderbolt cable to the enclosure give it a minutes then connect it to your computer. You need to be very careful when using OWC products; I lost over 30 years of work using OWC enclosures; it took three years to rebuild and recover all the work. The reason there was a firmware error on the enclosures that required you keep the drives in the same enclosure. If you moved the drive another enclosure (of the same model) it corrupted the drive and nothing was recoverable; OWC knew about the problem and never told people who punched the enclosures. I finally found out about the problem when I called their tech support and they told me.

 

[OldMacs4Me]

Always disconnect any external storage while updating!

This! Every once in awhile an Apple Update will pooch an attached drive. I can recall reports of this happening as far back as Panther or Tiger.

Nowadays lots of folks have drives continuously connected for time machine. That coupled with an auto-update is a recipe for disaster.