As you no doubt know the said iMac G3 has two firewire ports. I am using one port for the LG burner and the other for a external firewire hard drive that has OS Tiger. I have switched those two devices on those two ports and the external hard drive always shows up on the desk top each time. I have also plugged in another external firewire drive and it also shows up on the desktop . Therefore assume the two ports are OK. ( Not daisy chaining although tried that and both hard drives show up but not the LG with a prerecorded CD in it's tray . )

I am rereading the FAQ for Patch burn and will make a set of notes for the steps i have taken so that i can explain more clearly why at this time i can't seem to make it work.

Incidentally I do want to use the LG to read and write to DVD or CD.

Also note that the internal iMac G3 drive has both OS 9 and Jaguar.