computer resets itself

[Silviu Marin-Caea]

Hardware config:

Dual Pentium III, Intel STL2 mainboard, one SCSI disk: Seagate Cheetah
Ultra 160 on onboard SCSI controller Adaptec 7899

Partition table:
I know that it's not quite right but it works.  It's explained later on.

address@hidden /root]# fdisk -l

Disk /dev/sda: 255 heads, 63 sectors, 2231 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1           701      2231  12297757+  83  Linux
/dev/sda2           671       700    240975   82  Linux swap
/dev/sda3             1         1      8001   83  Linux
/dev/sda4   *         2       670   5373742+  63  GNU HURD or SysV

Partition table entries are not in disk order

Software:

Any Grub I tried does the same thing (0.5.96, 0.91, and 0.92 from
today's CVS).

Caldera OpenLinux 3.1 and Caldera OpenUNIX 8

Firstly, I have installed OpenUNIX 8.  It created the third and fourth
partitions.

Then I have installed OpenLinux 3.1, and I used its partitioning tool to
create /dev/sda1 and /dev/sda2.

address@hidden /root]# cat /boot/grub/menu.lst
timeout = 5
splashscreen = (hd0,2)/boot/message.col31

default = 0

title = OpenLinux 3.1 Server
root = (hd0,2)
kernel = /boot/vmlinuz-2.4.2-modular vga=274 quiet root=/dev/sda1
initrd = /boot/initrd-2.4.2.gz

title = OpenUNIX 8
rootnoverify = (hd0,3)
chainloader --force +1
makeactive
address@hidden /root]# cat /boot/grub/device.map
(fd0) /dev/fd0
(hd0) /dev/sda

What is wrong:

If I choose OpenUNIX 8, the computer reboots.

But, it's not that simple.  If I choose OpenUNIX 8 and press "e" to edit
the section, then edit the line with rootnoverify = (hd0,3), but not
changing it really, just edit it, say delete 3) and then write back 3),
then press "b" to boot, and there it is, OpenUNIX is booting just fine.
It is the only (stupid) way I've been able to boot it, by editing and
writing back the same thing in its section.

OpenLinux boots normally, by choosing it from the grub menu.