Ghost is like dd, but with filesystem knowledge (i.e., so it won't dump block belonging to deleted files, and can restore do a different size disk).
Somewhat like what dump/restore is on Unix file systems, but of course with Dos/Windows support.
>Ghost is like dd, but with Microsoft Windows filesystem knowledge,
And limited or no support for other filesystems. It was very convenient if you were a MS-only, and could be troublesome if you tried to do anything fancy with another OS. In versions after 2003 Norton began adding some support for other filesystems.