: Many PS2 discs contain empty "dummy files" used to push game data to the outer edges of the physical disc for faster reading. Archivers remove this dead weight safely.
Set the to gzip and Compression level to Ultra . PCSX2 will recognize the resulting .gz file. Using NAM DHC (for CHD): Download a tool like NAM DHC for a graphical interface. Select your Black ISO and choose Create CHD . black ps2 highly compressed