I know the Knoppix 6 you can't have persistent store with the LiveCD but with Knoppix 5 you could.

I know that with the LiveUSB you can have persistent store but I don't know about the HD installation.

I kind of assumed no, what's the point but, for me, persistent store is the reason for using Knoppix, so I've never tried a HD installation. I see a fair number of posts on the forums that seem to suggest the answer is yes. It certainly would make a difference to some of the answers.

If the answer is yes, but you don't actually create a persistent store does that mean that all changes are lost at the end of the session as with the LiveCD ?