Today i become frosted when i found that installing window xp, erase fedora 9 from my laptop. But i recovered my grub because previously i taken backup of mbr using following command.
dd if=/dev/sda of=/root/mbr bs=446 count=1
I recovered my grub by overwriting /root/mbr on /dev/sda
dd if=/root/mbr of=/dev/sda .
But now, real pain started my system was unable to mount root because it search UUID specified in initrd-184.108.40.206.img, so i decided to edit my initrd.
For that firstly i unzip and uncompress cpio archived initrd
After that i got content of initrd in /root/vk folder.
Then i edited /root/vk/init file and then again created cpio archived initrd
cpio --create --format 'newc'>/tmp/vkinit
cp /tmp/vkinit /boot/
Now i am able to mount my root.