A mate of my bro's dragged off some .iso files he was launching off a HDD and I've burnt them to disk to play on my system.
They all start to load up and then sit there sounding like it's trying to read the disk. If you press eject a message pops up saying "please insert ......... disk"
then after a couple of min I get something about an error has occurred, please remove the disk and restart.

my other games work fine. I'm using cios r14 and Neogamma R7
I have tried the previous versions of each with no luck.

Is there something else I need to be doing with these iso's?? they are all different sizes and I thought they were supposed to be a set size or something??