I've installed Debian on a Dell Poweredge T320 to use as a home server. It's been up for over a year now. Last reboot it would not boot as apparently a kernel update apparently breaks grub, and perhaps writes it to the wrong place.
The PERC H710 manages the RAID5 (sdc) and SATA disks (sda,sdb), but the SSD (sdd) is on its own.
Testing grub returns "error: no such device: c6408337-XXX" blkid lists the partition "/dev/sdd2: UUID="c6408337-XXX" (correct)
I'm at a loss here, why cant grub find the partition when blkid does? And where to I go from here? parted -l