Kiedyś już wrzucałem, dałeś nawet lajka:
Q: How to play multi disks games?
A: You have two alternatives: use .pbp or .m3u, as I recommend the CHD, I think that the m3u+chd is a better choice. To use .m3u and keep the PS folder organized, it's a bit laborious but easier than convert to pbp and rename.
Create a folder for the multidisk game inside the PS folder, put your images there, create a text file on the PS folder and rename to <GAMENAME>.m3u, edit this file and just add the path to the disks, run the game and when it asks for the CD2, you open the menu and go to Disc Control>Eject Disc, change the Disc Index, then Insert it again or just use the shortcuts. Example:
Resident evil 2: Create a RE2 folder, put RE2CD1.chd and RE2CD2.chd there, create RE2.m3u file on PS folder, inside it you insert:
RE2/RE2CD1.chd
RE2/RE2CD2.chd