After you do the restore using the bootable True Image CD the mbr and Grub config are munged.
Do the following.
Boot into a linux install cd and enter rescue mode by typing: linux rescue at the command prompt.
It will take you thru a few screens; accept the defaults and then it will tell you it is going to search for your linux install, if it finds one it will mount it using /mnt/sysimage as the path.
Once you are at a prompt type chroot /mnt/sysimage to change the root mount to your unbootable linux install on the hard drive.
Next look at grub.conf in /etc/ and determine which HD device holds the grub info and the kernal you want to boot.
title Red Hat Linux (2.4.18-24.7.x)
kernel /vmlinuz-2.4.18-24.7.x ro root=/dev/hda3
title Red Hat Linux (2.4.18-19.7.x)
kernel /vmlinuz-2.4.18-19.7.x ro root=/dev/hda3
AS we can see, the root file system is located in (hd0,0) this is (hard drive #, partition #)
Now exit that file and type grub at the command prompt:
This will setup stage2 and correct the MBR on your boot drive and enable you to boot the restored server.