before you start thinking about buying a new set of OS 3.1 disks you need to know whether your A1200 has the right ROMs fitted.
If it is a Commodore Amiga 1200 then it will almost certainly have the 3.0 ROMs (unless you or a previous owner has fitted newer ROMs)
If it is an Escom/AT Amiga 1200 it will have 3.1 ROMs. If you have this version then you can install your 3.1
Easiest way to tell? The badge above the Escape and F1 keys will either say "AMIGA A1200" with the new Amiga logo (3.1) or "Commodore A1200" (3.0)
Hope this has been some help! :-D
