Thankyou for that Capricorny.
It is good to hear that the fromhd= cheat code didn't work for you in 6.0.1 - I was beginning to think I was reading the wrong manual.
I will go back to the manual and try to learn how to saveconfig.
I did manage a terminal start and shutdown, so I have got knoppix sort of running, but to open a terminal shows CPU fully occupied for 20 seconds, and Iceweasel ditto for full minute but program crashes on loading a fairly simple login page at my ISP.