Knoppix DVD and CD.

Use the following command to copy the image file to hard drive so that after boot up, the CD/DVD can be removed.

knoppix tohd=/dev/hda10 dma xmodule=i810

Explanation: /dev/hda10 is the hard drive where you want to copy the image to. dma will accelerate the speed of the system. xmodule is used here for the intel i82845 vedio card.
After that, when you want to boot up, use the CD/DVD and get to the command line (F3) then input the following command.

knoppix fromhd=/dev/hda10 dma xmodule=i810
Now knoppix will run from the hard drive which is usually faster than the CD/DVD.