A standard PS2 game disc can hold up to (Single Layer) or 8.5GB (Dual Layer) of data. However, many games only use a fraction of that space, filling the rest with "padding" data to improve disc reading speeds on original hardware.

In the corner of a flickering basement, Leo stared at a progress bar that hadn’t moved in three hours. He was hunting for the "Holy Grail" of the early 2000s internet: a highly compressed Dragon Ball Z: Budokai Tenkaichi 3

Leo loaded the ISO into his emulator. The PlayStation 2 logo appeared, warped and silent. The menu loaded with no music, just the eerie click of navigation. When the fight started, the characters looked like they were made of jagged glass, and the voices were tinny echoes of a bygone era.

Appendix B: List of PS2 Games That Do NOT Work Well Compressed (e.g., Shadow of the Colossus – streaming stutter) Appendix C: How to Convert Between CSO and CHD