Verified CD with boot option 'knoppix testcd'
Past mounting /mnt-system
Past mounting /KNOPPIX
Past mounting /UNIONFS
Past symlinks to /UNIONFS

Following error found:
/init: exec: line 742: /sbin/init: input/output error

The following cheat codes were used with no success.
knoppix vga=0
knoppix (1-5)
knoppix acpi=off noapic nolapic pci=bios hpet=off nodma
knoppix acpi=off pnpbios=off noapic noapm

knoppix vga=0 debug -b 3

Using 'debug' boot option and typing 'exit' at each prompt, the system stalls at the following prompt:
BusyBox v1.14.2 (Debian 1:1.14.2-2) built-in shell (ash)
Enter 'help' for a list of built-in commands.
sh: can't access tty; job control turned off
/ #

At this point, I typed 'exit' and then 'init 5' but still have a blank screen.