Make a new 10.0b2 installation into an empty partition on a machine, where a
SuSE 9.3 is present. 
There will be entries for both systems in /boot/grub/menu.lst with the following
errors:

- The entry for the old SuSE 9.3 is missing an initrd line and the system will
  not be bootable, untill the initrd line is added.

- If 10.0b1 is installed on /dev/sda (1st drive) and the 9.3 is located on
  /dev/hda (2nd drive) the menu.lst will show hd(0,X) for both drives!

Example:
###Don't change this comment - YaST2 identifier: Original name: SUSE LINUX 9.3
(/dev/hda6)###
title SUSE LINUX 9.3 (/dev/hda6) /// this must be kernel (hd1,5)
    kernel (hd0,5)/boot/vmlinuz root=/dev/hda6 vga=0x374 selinux=0 
splash=silent resume=/dev/hda5  showopts
//// Here is the initrd line missing

###Don't change this comment - YaST2 identifier: Original name: linux###
title SUSE LINUX 10.0
    root (hd0,0)
    kernel /boot/vmlinuz root=/dev/sda1 vga=0x374 selinux=0    resume=/dev/hda5
 splash=silent showopts
    initrd /boot/initrd