How to DUMP in Linux

dump -0f /mnt/xxx.img /

"/" root

restore -rf /mnt/xxx.img .

"." mean is current directory

Find block ID and copy down the UUID

blk id

Edit /etc/fstab , /boot/grub/menu.lst

Replace existing UUID with new UUID

Find GRUB

touch aaa

grub

find /aaa

root (hd0,0)

setup (hd0)

If failed to boot system....

Run live CD

grub-install --root-directory=/mnt /dev/sda1