Quote Originally Posted by Harry Kuhman
<snip>
Knoppix can write to the various FAT partitions just fine. But the default nature of Knoppix is to mount a partition as read-only, to prevent novice users from destroying their data and then blaming Linux or Knoppix. If you want to write to such a partition you must make it writeable. Prior to version 6 this could be done by right-clicking on the partition icon. You can also use the remount option in the mount command, see man mount for details. The right click approach may not work in 6.x (lots of things don't work in 6.x), but the mount command approach should still work.
Knoppix 6.01 defaults to mount everything read/WRITE IIRC.
To mount read-only, I had to open terminal and use mount -o ro