, standard compressed formats like CHD often won't work. Instead:
You do not need to download sketchy, pre-compressed files from untrustworthy websites. You can safely compress your own legal backups using free, open-source tools. Method A: Compressing to CHD for PCSX2 Emulation
By using a compressed image, you can keep your original, physical, and rare PS2 discs safe in their cases, avoiding wear and tear. Risks and Considerations
DISK ERROR. INSERT SONY PLAYSTATION 2 FORMAT DISK.
For the vast majority of users on modern hardware, there is no perceivable negative impact on gameplay from using any of the major compression formats. In fact, there can be benefits.
A standard PS2 ISO is a literal, sector-by-sector copy of a PlayStation 2 DVD or CD. Because physical discs required data to be structured in specific ways for the PS2's laser to read them quickly, developers often padded discs with "dummy data" (blank sectors).
A standard PS2 DVD holds 4.7 GB of data. Dual-layer discs (like God of War 2 and Gran Turismo 4 ) hold 8.5 GB. If you have just 50 games on your SSD, you are looking at nearly 250 GB of data.
