Hi wamuggers on this bright Sunday morning, it's good to be alive :-)

I have a Laptop iBook 500/256 running 10.3.3 without OS 9.x installed. I wish to install it. When I set start up disk in prefs to the installer disk and attempt to do so I get 'Bus error' and i am recommended to start with Shift key down. I do so, get the 'extensions off' sign but still get the same recommendation to start with shift key down. Can anyone help me to sort the problem out.
TIA
Mac