GRUB doesn't boot on a DAC960 controller

[Alessandro Ambrosini]

I'm a newbie on Grub.
I've just installed RedHat 7.2 on a NEC server (Intel SMP motherboard, 1 CPU
550 Mhz, 512 MB Ram), BIOS made by Phoenix
RH 7.2 uses GRUB rel. 0.90
There is no a "SCSI before IDE" option in BIOS: boot device is set as "Other
Bootable Device" (DAC bios I suppose).
DAC960 SCSI controller is an " Acceleraid 150" with two 9GB scsi disk
configured as RAID-1 (mirror).
No IDE drives.

Logical drive is /dev/rd/c0d0  (it's like  "/dev/hda" )
Partition are:
/dev/rd/c0d0p1 is swap
/dev/rd/c0d0p2 is root partition

I've tried with LILO (LILO 21.4.4 ) and it works fine.
----- lilo.conf ----
prompt
timeout=50
default=linux
boot=/dev/rd/c0d0
map=/boot/map
install=/boot/boot.b
message=/boot/message
#linear

image=/boot/vmlinuz-2.4.10-7
        label=linux
        append="nousb"
        read-only
        root=/dev/rd/c0d0p2
---------------

But I can't install GRUB.
'grub-install /dev/rd/c0d0' says "/dev/rd/c0d0 does not have any
corresponding BIOS drive."
Yes, I know that GRUB read BIOS for drives, but it seems not read DAC960
BIOS, it seems read motherboard BIOS and not DAC960 BIOS. And in motherboard
BIOS there is not any reference to SCSI drives.

I need use Grub because it supports ReiserFS as root partition. With Lilo
I've some problem (strange 0x40 and 0x01 error).

There is a way to boot with GRUB directly from HD (without using a a boot
floppy every time) ?

This is the default /etc/grub.conf in RH 7.2
-------- grub.conf -----------
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You do not have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /, eg.
#          root (hd0,0)
#          kernel /boot/vmlinuz-version ro root=/dev/hda1
#          initrd /boot/initrd-version.img
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,0)/boot/grub/splash.xpm.gz

title Red Hat Linux (2.4.7-10)
        root (hd0,0)
        kernel /boot/vmlinuz-2.4.7-10 ro root=/dev/hda1
----------------------------------