Comment 3 for bug 788298

Jordan Uggla points out that his fourth patch in http://lists.gnu.org/archive/html/grub-devel/2009-12/msg00276.html addresses part of this, by at least making grub-reboot not do anything rather than acting like grub-set-default; I'll think about that patch some more but it seems reasonable. Making grub-reboot raise an error immediately is harder but possible. Actually supporting your configuration for grub-reboot is hard and may not ever happen, as it requires writing to the RAID array and GRUB deliberately doesn't implement that right now due to safety concerns.