http://livecd.sourceforge.net/
The FreeBSD LiveCD Tool Set has a main goal, wich is to allow one to generate their own custom FreeBSD Live CDs. FreeBSD LiveCD was born as a Brazilian FreeBSD User Group (www.fugspbr.org) internal project and technical need. The main subject was to create a tool that would allow us a safe diagnostic method, under emergency enviroments and specially as a rescue disk where FreeBSD partitions could only be accessed (mounted) externally.