This is the list of the partitions as seen in /media:

knoppix@Microknoppix:~$ ls -al /media
total 1
drwxr-xr-x 17 root root 408 Jun 25 2008 .
drwxr-xr-x 24 root root 568 Sep 14 20:02 ..
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sda1
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sda2
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sda3
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sda5
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sda7
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sdb2
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sdb5
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sdc1
drwxr-xr-x 2 knoppix knoppix 48 Sep 10 18:39 sdc4
knoppix@Microknoppix:~$
I suppose that the Live DVD and the USB install both have some kind of -root privileges-
to manage directories, folders and files and these privelidges are not given in HD installation.