Problems Booting the CD

[Mr. Chopper]

Ok, so I'm using Knoppix 3.4, trying to get it to boot off the CD. But it halts, with one particular error message over and over:
hda: Host Protected Area Disabled.
I have no idea what it means or what I have to do to get it to load knoppix, but I'm desprate for ideas. :P

P2 300Mhz
128 MB EDO RAM
20GB 7200RPM HD

[pulsar]

My guess: UDMA for the CDrom might be disabled in the bios. A check would be good.

[Mr. Chopper]

Ok, I'm not seeing anything that says specifically UDMA for drives.... :?