Knoppix hangs on boot up

[gb789us]

Having a variation on the same problem. When the boot reach the step:
Accessing knoppix CD at /dev/hda... (yah; hda, not hdc)
I get an error message:
ismod: can't read '/cdrom/koppix/modules/cloop.ko': I/O error
ismod: can't read '/cdrom/koppix/modules/cloop.ko': I/O error
After which I'm told that the knoppix file system cannot be read (sorry!) and I drop to a minimal shell.

Help? Thanks in advance.

I get the same thing. I just burned a dvd for v. 5.3.1 and it trys to load hda and goes to /dev/hdc with the long I/O error. Any ideas?