installing grub with more than eight disks

[Björn Torkelsson]

Hi,

We have two raid-controllers with eight disks on each. I'm trying to
install grub in the MBR of the first and ninth disk (i.e the first disk
on the second controller), but when installing it on the ninth disk I
get an "Invalid device requested" error:

mattis:~# grub-install /dev/sdi


    GNU GRUB  version 0.95  (640K lower / 3072K upper memory)

 [ Minimal BASH-like line editing is supported.  For the first word, TAB
   lists possible command completions.  Anywhere else TAB lists the
possible
   completions of a device/filename. ]
grub> root (hd0,2)
 Filesystem type is reiserfs, partition type 0xfd
grub> setup  --stage2=/boot/grub/stage2 --prefix=/grub (hd8)

Error 12: Invalid device requested
grub> quit


The device map lists all 16 disks.

This is with grub from debian unstable (0.95+cvs20040624-12) on an AMD
Opteron.

Does anybody have any idea how to fix it? Or where to start looking in
the code?

In the end we are going to running software raid on the disks, which is
why I want to be able to boot from disks on both controllers.

/torkel