Many community-driven archives now provide pre-converted PS2 CHD files to save users the conversion time: Internet Archive
Unlike ZIP or RAR (which need to be extracted to play), CHD is a lossless, readable compression format . This means: ps2 chd roms upd
The system log scrolled rapidly. IsoFS: Block size is 2048. Searching for CDVD... Found PS2 DVD. Searching for CDVD
Alternatively, the user might be referring to a "rom update" in general for PS2, but specifically using CHD format. Perhaps they found out that some PS2 games have updates from their original release that are distributed as CHD files. But I'm not sure. Alternatively, maybe they're referring to a tool that updates CHD ROMs, like a new version of the CHD tools or an emulator update. Perhaps they found out that some PS2 games
CHD (Compressed Hunk of Data) is a compressed file format used to store and manage large game files, including those from the PS2. CHD files contain the game's data, including the ISO (International Organization for Standardization) file, which is the standard format for storing and playing PS2 games on emulators.
Wait, PS2 emulators usually emulate the hardware, so maybe CHD isn't as common as in arcade emulators (where MAME uses CHD for cabinet data). For PS2, ISO files are more typical. So maybe the user is referring to a different use case, like using PS2 BIOS files in a different format? Unlikely. More likely, they have PS2 game backups stored as CHD files and need help updating them or converting them.