"Floppix is a teaching tool; it is a very small subset of Debian/ GNU Linux that fits on two 3.5" 1.4Mb diskettes. The current version is derived from Debian 2.1 (slink), copyright under the GNU GPL "copyleft". It provides a platform to practice linux commands and experiment with simple system administration.
Floppix has no hard drive support; you cannot access, modify, damage or destroy anything installed on the hard drive. For this reason, Floppix works safely in the lab, at home or at work.
Floppix runs from a RAMDISK. Since the entire filesystem is stored in RAM, all changes are lost when the system is shutdown or rebooted. This makes it possible to experiment freely; if you want (or need) to start over, all you have to do is reboot. For example, if you want to know what is left after the superuser has deleted the entire filesystem, Floppix is the place to try it."