If you've ever tried to run Knoppix on a Compaq or HP Proliant with a Smart Array controller, you probably got a rude surprise.
Here's how to make the hard drive(s) show up.
Open a shell window.
Type 'su' (no quotes) to become root.
Type 'insmod cciss' -- you may get a message that it's already installed.
Type 'cd /dev'
Type 'MAKEDEV cciss' (this is case-sensitive).
Now Knoppix will see your drives so you can mount them and/or edit the partitions with qtparted.