I have downloaded and created the disks to load Knoppix - both the DVD and the Live CD. When I try to boot either of these disks, both get to the same point and stop. I get 'Searching' and 'Waiting' messages with what appear to be disk addresses like /dev/sr0 and others. They go by so fast I can't read them. Both eventually end with the same message -
could not mount disk to /mnt-system Starting debugging shell

I have found posts that imply the cd/dvd burn was bad. In my case, the cd/dvd will boot in 3 other pc's and boot up. Other cd's - UBCD and Fedora and windows - read just fine. The disks are good. The dvd reader is good. I have determined that valid devices are /dev/sr0, /dev/sr1, and /dev/sda1. The first 2 are dvdrw and dvdrom. The other is the hard drive I want to install Knoppix on. What do I do next in the debugging shell to figure out what is wrong?
Thanks, Vince Radice