**Data would be annoying to lose (mainly because it took many days to load it up) but I have all of the original content I can put back on it. If I can recover the partition, that would be amazing I'd rather spend a day or two experimenting on recovery than loading a hundred discs back into my file server
Short backstory: Updated BIOS, and as always, switched the setting back to RAID, but for some reason this time half of my disks were listed as non-member disks I then started following instructions other people posted using TestDisk (which is awesome, by the way, thanks!)
I got to a point where it can see the partition, sort of...
Detected a partition table, which seems promisingDEFAULT:
Hint: EFI GPT partition table type has been detected.
Detects the partition (partially, it should be around 14tb), and it sees the correct partition nameDisk /dev/sdc - 15 TB / 13 TiB - CHS 1824005 255 63
Partition Start End Size in sectors
>P MS Data 7876608 19528951767 19521075160
NTFS, blocksize=4096, 9994 GB / 9308 GiB
A couple things: 1) It is showing it as 10tb partition, 2) It lists it as NTFS, 3) When I choose list files, it says
I'm not sure if that's because it is actually damaged (which I could see, since the amount is low), or if it's because it is treating it as NTFS instead of ReFS.Can't open filesystem. Filesystem seems damaged.
Also - do I need to wait for the raid array to finish initializing again? I guess that could also be related to the issue
I tried out PhotoRec and it almost immediately began finding files, so that seems like a good sign that the partition might be recoverable