To quickly select these files in a typical file manager, sort the files by type (you may have to add this column to your file manager), click on the first of the files you want to delete, then hold shift while clicking the last of the files you want to delete.Īlternative: Pigz is multi-threaded for GZIP, so it will compress much quicker.Īlternative suggested by /u/Mad_Fun: PCSX2 also supports CSO/CISO files made with maxcso. Repeat the process for each ISO you have, or use a command line tool (see alternatives below) to do them all in a batch.ĭelete the uncompressed files (all the game files not in GZIP/GZ format). Press OK and wait for the operation to complete. For compression level, select Ultra to achieve the best compression, or a lower setting to have the operation completed faster. Right click on the ISO, select 7-zip, the select 'Add to archive'.Ī window will pop up. The index is stored where your game file is. The game will still play exactly the same in PCSX2, except you must wait for it to build an index the first time the game loads. PCSX2 will build an index of each gzip compressed game it loads, so that there is no speed difference between playing an uncompressed and compressed game. PCSX2 (the PS2 emulator) supports loading games with the archive format GZIP. Don't ask about piracy this is a strictly legal guide and there are other subreddits to ask about piracy. Don't ask me how to backup your games to ISO format, there are other guides for that. If I link to a tool that only works on Windows, try running the tool in WINE on GNU/Linux or in a Windows virtual machine on OSX. NOTES: If I make a mistake or leave something out, please inform everyone in the comments (do NOT PM me). We're talking up to ~90% file size reductions on some games, while keeping those games playable in emulators! No extraction/decompression required to play! So, for those of us that like to keep copies of our games stored on our computer for the purpose of emulation or backup, here's a brief guide on significantly reducing file sizes of those games. 'Cloud' storage isn't local it's inconvenient to use cloud storage solutions for big games because the game has to be downloaded to play. Many people would like to keep a decent collection of game backups without having to purchase a NAS or desktop tower loaded with HDDs. Developers had more freedom than ever to bloat up their games. Gen 6 and especially Gen 7 games are really big. Tech makers and tech buyers alike are switching over to a lower-capacity storage technology, the SSD.

Ps2 iso highly compressed rar