Jimbo I've got your problem too. I've 2 hd, the first running with win2000 Professional, the second just formatted with ntfs file system.
I run Knoppix the first time with this option:

>>knoppix26 lang=it screen=800x600 splash

everything was ok, i changed some option like desktop themes and finally reboot system. When i tried to load knoppix again with the same option I used before, system stalled at this line

Scanning for Harddisk partitions and creating /etc/fstab...

There's nothing i can do expcept reboot my pc.
I've a Pentium 3 processor, 533 Mhz, Ram mem 192 Mb, integrated Intel Video card 810e, creative sound blaster pci 64.