1) Knoppix is not suitable for installing, there are many problems involved. If you want to install, consider Debian or some distro intended for hard disk.

2) Do you have any idea how many floppies it would take to hold Knoppix? And no, no one has put Knoppix on Floppies.

3) If you want to run Knoppix, not install it, then I suggest that you likely made the CD inproperly, likely by burning at high speed. See answer #1.