booting Linux from an image that lost booting capabilities
 

I made a ghost image of my LINUX installation (CENTOS) onto a new hard disk. During the process I got
a message that I might loose the boot capabilities for LINUX.
I switched hard disks and in the new one I cannot boot Linux.
I know that I have to boot with the installation CD in recovery mode but I don't know what to do
next. I'm using the grub loader.
My disk is configured as follows:
hda1 windows partition (this is the boot partition according to fdisk)
hda2 /boot
hda3 /
hda4 /swap

I will appreciate any help.
Thanks

You need to boot with the installation CD, `chroot` into your disk installation, and run `grub-install` to set up grub anew.