The Tech Zone reviews the Knoppix - a Linux OS that runs off 1 CD.

What if you had an operating system that ran completely from a CD? That's right, just one CD. And this CD also contained very useful programs for word-processing, data recovery and system repair utilities, image-editing and internet connectivity, along with excellent audio and video players? What if all you had to do was to boot from this CD and voila, in a few minutes your new OS had taken over your PC. Taken over? Nothing to worry about, as removing the OS from your computer was to be as easy as removing the CD. Welcome to the world of Knoppix.

Knoppix Review