The CD does work in computer A, but not computer B.
First, while booting, the message is:
Looking for CD-ROM in /dev/scd0

hda Maxtor ...
hdc CD-ROM Samsung ...
Can't find Knippix file system

So, I suspect the Maxtor should be hdc and the CD-ROM should be something
other than hdc and that's why it can't be found.

I tried tohd=/dev/hdc
but no luck. Do you have a solution?