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Topic starter
Running a Mac Studio / Ventura. I have an OWC NVME Enclosure with 4x 2TB NVME Drives in RAID 4. Everything has been working fine for quite a while. All of the sudden this morning, the volume won't mount, and Softraid has it's status as "degraded" with one if the drives saying "No Errors" but also data disk - out of sync - rebuilding.
Problem is, it won't rebuild without being able to mount. OWC tells me out I'm kind of SOL here, and have to backup all the data with Disk Drill and then rebuild.
If anyone has any other ideas, would love some help. I would happily pay a few hundred dollars to swap that drive out if it would mount and rebuild. I back up regularly, but as luck would have it, my auto backup was off for a few days and now I'm stuck pulling everything off the volume with Disk Drill. but REALLY hoping there's a cleaner way to rebuild the volume or re-mount the drive so I can cleanly backup.
Ugh.
Posted : 17/02/2026 4:16 pm
Unfortunately, there is little you can do, excepy Disk Drill, or R-Studio. Both let you scan with the free trial. Both copy data off pretty quickly, also. Just do not pay, unless they find all the data!
one problem with RAID 4, however, did you ever validate the volume? Tahoe fixed a bug where parity was not being written correctly, so a validate is important.
Be very careful now.
Once in a while, connecting to a "New" system, enables damaged APFS volumes to mount, but there are no repair tools yet.
When you recover the volume, I would consider this:
test files, make sure they open, etc.
If they do not, or show corruption on newer files there is still a way around it.
I can post that here if you need me to, but do NOT do anything to *write* to this volume in any way, until all data is recovered. OK?
No rebuild, etc.
Posted : 17/02/2026 7:22 pm
Topic starter
Yep sounds good. I'm not honestly sure if I validated the volume when I created the first time. I will make sure to do so next time.
I did a byte to byte DMG extraction of the full 6TB volume and am now recovering all the data off the DMG copy. LOT of Orphans unfortunately so, it's gonna take some time to get the projects I need back together. I normally use Chronosync to do a daily backup of the whole drive, but it was turned off for two weeks.
It's going to take another 2 days to extract all the data off the DMG so, we'll see how it goes. Thanks for the reply.
Posted : 18/02/2026 3:30 pm
Good luck. Validate on flash media is important not when creating the volume, but every once in a while. Tahoe stops the bug that causes problems with parity data, so I recommend you update to Tahoe, then validate.
Or, use RAID 0 for now and maintain backups.
Posted : 18/02/2026 6:58 pm
