1. It's an import game-disc mod disc and it's used for playing (mainly Japanese) imports. I'm not sure how to use it as I have not plugged in my PSX to a TV in a few years.
2. Yes.
2. Yes, and no. It has to be damn near that size because if it's too big, the PSX can't read it, and if it's too small, the whole disc won't burn. Made by me. PM for code. Better version coming soon!