Can't install grub on Hardware RAID

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https://bbs.archlinux.org – I tried manually installing GRUB2 after the installation following the instructions in the wiki.  I followed the instructions letter for letter except for the last.# grub-install --directory=/usr/lib/grub/i386-pc --target=i386-pc --boot-directory=/boot --recheck --debug /dev/sdaIn this step I changed "/dev/sda" to /dev/cciss/c0d0 and the bootloader installed successfully with no errors.When I rebooted, GRUB2 started fine but when I try to start Arch I get "error: no such device:..." and "error: no such partition."  There is obviously a configuration file (HowTos)