I found this fascinating quote today:
Clonezilla is an open source disk imaging, cloning and backup software. It supports ext2, ext3, ext4, reiserfs, xfs, jfs of GNU/Linux, FAT, NTFS of MS Windows, and HFS+ of Mac OS. You can use it to clone single or multiple machines. It is more feature-rich than commercial Norton Ghost. In this video tutorial, I will show you how to create an image of a hard drive using Clonezilla live CD which you can download from clonezilla.org. I assume that you have downloaded and burnt the CD. So let’s get started.Amjad, Creating and restoring an image of hard disk with Clonezilla
You should read the whole article.