Here is the output of fdisk -l
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2611 c W95 FAT32 (LBA)
/dev/sda2 2612 17902 f W95 Ext'd (LBA)
/dev/sda3 17903 19457 12 Compaq Diagnostics
/dev/sda5 2612 15291 b W95 FAT32
/dev/sda6 15292 15552 82 Linux Swap / Solaris
/dev/sda7 15593 17902 83 Linux
from your output of fdisk -l , it refers that you are having 2 filesystem for linux.
/dev/sda6 --- swap
/dev/sda7 --- root
you do not have seperate filesystem of boot. so boot files are in root file system itself
so you follow the step given below
boot into sytem using cdrom with rescue
boot: linux rescue
after logining in
chroot /mnt/sysimage (hopefully this is right)
then go to the file
/boot/grub/grub.conf
and edit the following enties in that file
title .............
root (hd0,6) // this is one specfying the boot file in MBR
kernel ................. ro root = /dev/sda7
........
selvaraju
http://linuxmonk.blogspot.com