Quote Originally Posted by gabriele
... In case it was a software problem, I tried uninstalling the driver for the CD drive and then reinstalling it, to no avail.....
Can't be a driver problem, the OS (and thus the drivers) are not loaded at that point in the boot process. Only software it could be is the BIOS. Sure sounds like a strange problem. The CD otherwise works fine?

Quote Originally Posted by gabriele
... I read that there is a file you can put on a floppy that will direct the system to the Knoppix CD. While it may not work, it's worth giving it a shot.
That sounds like SBM, I gave you the link above.