Hi Erik_FL,
You said you had to do a "native" GRUB installation from BIOS since GRUB couldn't recognize your RAID array in linux.
You could get a linux GRUB installation working by supplying a custom device map:
Code:
$ cat device.map
(hd0) /dev/mapper/isw_cafaadgife_RAID0
Here I used the base RAID array device, as opposed to the individual isw_cafaadgife_RAID01, isw_cafaadgife_RAID02, and isw_cafaadgife_RAID03, which correspond to RAID partitions (hd0,0), (hd0,1), and (hd0,2) respectively.
Running grub with this device map, everything works out nicely:
Code:
grub --device-map=device.map