Tak jak pisalem - slowo klucz: disk signature.
Tu masz cos do poczytania:
http://support.microsoft.com/kb/223188

A tu jak to jest rozwiazane u innych (przelacznik linii komend do ghosta):
-FDSZ
Force Disk Signature to Zero. Use to resolve bootup failures after cloning a
partition on a Windows 2000/XP computer, especially when the disk and
controller are the same in the source and destination computers, but the
partition sizes or layout are different. This switch configures Ghost to
force a disk initialization.