Umm, how to force flash?

Hello. Recently i found UniRom. And i wanted to play my backups on ps1. So i bought a gamehunter cd version. (the label fell off). 26034390_164941567454352_1770230708_n[1].jpg I swapped discs to get into UniRom install, but seems like it doesn't detect it. 26057757_164941504121025_1364491380_n[1].jp...