do you realize that redhat uses checksums or signatures to check the
validity of their CD's?
try to burn a redhat image with the -pad option which adds a chunk of 0's
to the end of the image and try to boot it.
I seriously doubt if redhat tells you how to how to generate such a
in addition to the problem that Linus points out about being unable to
change the contents of the write-only CD this would seem to conflict with
what you are claiming the GPL is supposed to allow.