LiveBackup - create bootable live-ISO's from installed Linux systems

"LiveBackup is a framework to create live-cd's from installed Linux systems. It supports different hardware detection systems and provides user configuration separated from backup images. [...] LiveBackup is not a distribution, it is a more general approach to create Live Cd's based on any distribution. KNOPPIX hardware detection can be used but it is separated from the native Linux distribution. The user does not need to modify his system before doing the backup."

http://livebackup.sourceforge.net/

Resources: