Yesnot

SO I bought a dvd copy of a combat mission fortress italy game as you do, and it wouldn't read now at first I thought it was because I had pulled this DvD drive out of an old computer and had Jerry rigged it to my new pc, but putting in a music cd it got read with no problems, but when I try and read my combat mission disc it says "please insert disc into drive D:" so if you have an idea of why it doesn't work tell me please, I just wanna play my game