Ok, so It seems you have 3 parts in your hard drive hda. I see 2 problems :

1 - usbview doesnot work, this is weird. May be your kernel does not support usb... I d'ont really know, but usbview has always worked on all the system where I have tested Knoppix.

2 -I don't really know what is cloop on your system, I don't have it on mine. Try to create a directory called test in your directory /mnt
As root, type:
Code:
 #mount -o umask=000 /dev/cloop /mnt/test
Then, use knoqueror to see/mnt/test

What happens yet ?