If I enable IOMMU in my BIOS, unraid cannot read my harddrives. One of my primary purposes was to passthrough my gpu a VM, so I'm pretty dissapointed. I've added amd_iommu=pt to my syslinux.cfg file and that didn't resolve it, unfortunately.
Another user with the same hardware was unable to resolve this in the following thread: https://forums.unraid.net/bug-reports/stable-releases/disks-missing-after-upgrading-to-670-r536/page/2/
Is there another solution or boot configuration I can try?