Some PSX ISOs have two discs

I'm using the epsxe emulator, and for pure nostalgia, I'm re-playing Metal Gear Solid. I've gotten to the end of Disc 1, so my question is, how do I play the rest of the game, meaning Disc 2? I'd love to know, so that I can once again kick the sh*t out of Liquid Snake, and thus close this nostalgic episode. BTW, Metal Gear Solid is in my opinion, the greatest video game series ever!!! Hideo Kojima, I am not worthy!!! (bowing, bowing). Any help with this would be greatly appreciated. Thanks guys.

There should be a second image file.

The earlier versions of ePSXe let you switch disks in-game.
Try copying and pasting your save files to an older ePSXe, get past the "please insert disk 2" by switching disks, save it, and copy and paste the new save files back to your old emulator.
The ePSXe 1.7.0's option to switch disks doesn't work for some reason, but they are fixing it.