i recently came into possession of a modded ps3 with a 1tb ssd installed in it is it OK to backup my official copy to my ps3 and play it off the ps3 hdd or does it need to be the actual disk?

Since this isn't an official way to play the game, we'll have to insist on runs being done from the disc for the console board. But you can absolutely play it through your PS3

ok thank you