Quote Originally Posted by malaire
You can download linux-version from http://www.truecrypt.org/downloads.php.

However, there is no version for Knoppix or Debian, so you need to download the sources and install from there.
However, this needs kernel-sources, and I don't know where to get kernel-sources for Knoppix 4.0.2 CD, so I wasn't able to install this.
Borrow a Knoppix 5.0.1DVD (has the kernel sources) to download/verify the truecrypt source/signature and run the ./truecrypt-4.2a/Linux/build.sh script to compile it. Bzip2 the entire truecrypt-4.2a subdirectory (including the newly compiled items) and to compress and save it as a new, mildly larger archive.

Use this new archive anytime with the 5.0.1CD to bunzip2 it, run the ./truecrypt-4.2a/Linux/install.sh script, and go.

(Perhaps on a 1GB USB stick booting from knoppix iso with 256MB left for a truecrypt storage archive? )