i tried it before.
mounted /dev/hda10 /mnt
chroot /mnt /bin/bsh
i had edited fstab for / hda10 swap hda11
grub-install /devhda10
it gave me an error error reading stage 1

then sewcond time it gave an error read error stage 5 but it is not important succeeded.
but only grub cli is appearing on invoking hda10
tab shows options of vmlinuz vmlinus-2.6.12 initrd.img -2.6.12 initrd.img etc
what line should be booting in CLi
which of these vmlinuz and initrd.img will boot
i tried to boot with vmlinuz.2.6.12 initrd.img-2.6.12
then it starts and stops saying kernel panic try telling kernel init level
tried runlevel 3
no success.

still i have not edited menu.list
i will look into that and get back here.