Originally Posted by rickh
No. Then you'll have Debian on your drive. Saying Knoppix is the same as Debian, is like saying Ubuntu is the same as Debian. If you've ever seen the tangled mess that is a Knoppix sources.list, you'd know it's not Debian.
You can copy the source.list from knoppix on your debian system and get the same software. By the way, the sources.list on Knoppix is there so you can install a very large number of software without too much hassle. 99.99% of the software that is actually present on the CD is from debian.
What is different from debian is the kernel that is made to run on a wide range of computers and the filesystem that is made to run on the CD.
installing knoppix is really a bad idea, because it is not made for that.
Install debian, install the software that is on knoppix, get the sources.list from knoppix and you get knoppix installed and tuned for your computer. There is really no point in installing knoppix. Knoppix IS Debian!
Ubuntu is totally different because it has a repository of its own that is not compatible with debian (It is not advised to mix the repos, although for 80% (95%?) of the cases it works as Ubuntu is not that far from Debian anyway). Knoppix has no repos. Knoppix software are installed from debian repos. If you copy the knoppix CD to your hard drive and apply some hacks to make it boot, you get a poor man debian. A Debian that is slow and that checks for all the hardware in the world at boot.