Wing Commander 4 (PSX) problem with Disc 2?


I've tried playing Disc 1, and now it says insert Disc 2, however it stuck in the screen of Disc 2. I am using RetroArch for the emulator. How to solve this problem?
I haven't actually tested the following method, but I think you could have a try.

Switch to another emulator, such as ePSXe, and use the save file generated by RetroArch (you may need to change the filename and extension), then test the game to see whether you can continue.

If you can't, you may need to check your game discs.