Thanks joylove I have a different sat/nav drive now but it won't code to the monitor. I've kept your prvious note's which I will pass on to the indy who has an Autologic computer. Kind regardsGood to hear :thumbsup
The OP should note, if you don't burn the OS disk properly (MODE2/FORM1) then you will brick the nav with this procedure and a wrong mode disc, and it will be unrecoverable. You have been warned.