I am running KNPX off a CD 3.82 version. All is working fine, except I can't get it to recognise either of my USB hard drives (40 Gb and 160GB)

my USB flash drive (512mb) works fine. Even when I remove the flash drive and use the usb hard disk, it doesn't show anything. My Existing 120 gb IDE disk is working fine as well.

Have I missed something, I would really like to use this to learn linux.