Enter (Compressed Hunks of Data). Originally developed for MAME arcade emulation, CHD has become the gold standard for lossless compression in the emulation scene. This guide will walk you through everything you need to know about the PS2 CHD ROMs install process—from why you should convert your ISO files, to which emulators support it, and finally, step-by-step setup instructions.
Updated: April 2026. Compatible with PCSX2 nightly build v1.7.5+ and chdman v0.270+ ps2 chd roms install