Both of those versions you bought are, I believe, illegal copies. All actual PlayStation games came on CDs that had a black covering on the bottom. That covering was to help differentiate them from illegal copies as well as anyone mistaking them for music Cds (yes, some people would do that).
The game should be all included on one disc- the only games I can recall off-hand that were multiple disc are the original Metal Gear Solid and Final Fantasy VII.