I've had a RAID 1 working perfectly for years, and ran into the issue described at https://community.amd.com/t5/drivers-software/raidxpert2-array-1-raid-array-critical-error-offline-a... so I'll stop having my PC go to sleep (annoying, but it's fine). During the recovery process, my non-OS, data-only RAID 1 was marked as Offline. I am able to mark the other, single drive as a spare. I can even add it as a dedicated spare to the broken RAID. But it won't rebuild. The tab is grayed out and it won't automatically build.
If I have the single drive set as a spare I can't use the existing drive still in the RAID, I can't see it at all. If I delete the spare, the RAID (with one drive) still says Offline but the drive pops back up in Windows, files intact.
How do I get the RAID to rebuild? Thanks!