Problem trying to boot on a scsi disk

[TooFat]

        Hello !

        I have some problems with the grub. It can't boot a system located
on a scsi drive and seems to have bad access to the bios scsi card.

        Arch :  Intel p200
                1 IDE disk : 3 partitions, the second is a slack 3.6
                3 SCSI disk : on first (sda) : 3 p., second is DIY linux
                Bios boots by order A, C and SCSI (i forgot bios version)
                SCSI is an old 2940 (no more than scsi2, bios v1.23)

        OS : the grub is installed on the 2 systems, the kernels to boot :
                slack 3.6 : (hd0,1)
                  /boot/kernel.prod
                  /boot/kernel.old
                DIY : (hd1,1)
                  /boot/kernel.prod
                  /boot/kernel.old
                  /boot/kernel.prout (for tests)
                the /boot/grub/menu.lst is different on the 2 systems

        Context : everything below done from the grub bootdisk AND from
grub on (hd0) (ide disk). So, the several command I test (not all ;) :

*       root (hd0,1)
        find /boot/kernel.prod
        -> (hd0,1)

*       root (hd1,1)
        find /boot/kernel.prod
        -> (hd0,1)

*       find (hd1,1)/boot/kernel.prod
        find (hd0,1)/boot/kernel.prod
        -> both return (hd0,1) (!!)

*       find (hd1,1)/boot/kernel.prout
        -> (hd0,1) (the file doesn't exist on hd0,1)

*       root (hd1,1)
        kernel (hd1,1)/boot/kernel.prod root=/dev/sda2
        boot
        -> kernel seems to boot, bug hang after "Freeing unused kernel
memory: XXk freed", just before init (the kernel don't find it ?)

*       same error when trying (hd1,1)/boot/kernel.prout

*       cat (hd1,1)/boot/grub/menu.lst
        cat (hd0,1)/boot/grub.menu.lst
        -> cat the good file

*       ioprobe (hd0)
        -> lot's of hex numbers

*       ioprobe (hd1)
        -> hang (need to reboot)



        Is it a problem or a misconfiguration ? 



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