Still can't get it working.
The game is motocross mania 3. I'm using G04 ID dics, and other verified by DVD identifier as good for consoles.
The thing is very odd. The game load. The screen flickers a bit as it does on load other games (which are working) but instead of playstation 2 logo, the screen goes to the red "insert ps2, ps, disc" (somethg like that).
I'm burning using 4x speed, and Samsung TS-H55U DVD+/-RW recorder. Only DVD+R. Tried DVD-R too but the result is similar