Turns out the ISO was incomplete and improperly named, came with only disk 2 and 3. Got a different one and now its working perfectly. Thanks to everyone who replied.

I've been trying to run this game but when I load the first disk .bin it loads all the way to the title screen but when I choose new game it prompts me to insert disk 1. I tried using the eject function to load it again but then it just says, "Checking disk. Please wait." It hangs at that ...