Knoppix is a distribution of Linux developed by Klaus Knopper. It is designed to be booted off of a CD or DVD. There are many customized versions of Knoppix designed for various different functions. It is useful to users not only for those who wish to run their system off of read-only media, but as part of an arsenal of tools for computer diagnostics.

Damn Small Linux is an even smaller distribution based on Knoppix. It is a 50MB mini desktop designed to be booted from a Mini-CD, a USB drive, or even within Windows. There is a larger variant available that is currently around 85mb for those who wish to take advantage of certain technologies that the smaller footprint does not allow.

KnoppMyth is the Linux equivalent of Windows Media Center Edition. It is a Knoppix distribution that attempts to automate the setup and usage of the MythTV DVR package. It can be used in a variety of ways. We’ll have more about MythTV in the future.

There are numerous other variants. But a plain vanilla Knoppix CD or DVD can mount Windows drives when the Windows OS is corrupted, resize partitions, and thus is a valuable tool. The graphical tools included as well as the standard command-line Linux tools can be a lifesaver.

Recently, a Windows XP computer failed to boot. We could not, no matter how we tried, get it to boot even to Windows XP Safe Mode. We booted the system with Knoppix, backed up the data over a network, then did a wipe, reinstall, and copied the data back.