I do not have DVD drive so I installed Linux from iso file.
mount -o loop openSUSE-10.2-GM-DVD-i386.iso opensuse
cp linux /boot/inst-linux
cp initrd /boot/inst-initrd
title Install SUSE
Drives and partitions start from 0. If your have boot filesystem as a partition change the lines "kernel inst-linux" and "initrd inst-initrd"
During installation first you choose disk then you have to type the directory and complete filename of the ISO file.