These days PSGroove.com (linked above) has shared particulars courtesy of inf1 at http://psx-scene.com/forums/showpost.php?p=533067&postcount=1 on how to run PS3 video games which contain 4+GB information from an external PlayStation 3 FAT32 HDD.
All those interested can verify out the guide beneath, and be confident to share your results in our PS3 JailBreak Recreation Compatibility List.
To quote: Due to FAT32 limitations people essential to run these video games from internal hard drive only. However, it appears that isn’t the only choice any longer. Many matches make use of a document structure acknowledged as PSARC (*.psarc).
These information ending in .psarc are archive recordsdata related to zip or rar data on Pc. By extracting these huge archive recordsdata and making use of the smaller recordsdata that are within, people can get remain beneath the 4GB limit.
This technique has been tested on Uncharted II, and will only operate on video games utilizing the psarc file structure.
1.) Download PSARC.zip PlayStation Archive Utility (or the PARC GUI v0.1 or the PARC GUI v0.2 update by TeamKidneyBean if you prefer).
2.) Extract zlib.net.dll and PSARC.exe to any folder.
3.) Find any files more than 4Gb for example /PS3_GAME/USRDIR/build/main/pak22.psarc (5,596,444,529 bytes)
4.) Copy pak22.psarc into zlib.net.dll and PSARC.exe directory.
5.) Extract pak22.psarc (just drag-n-drop pak22.psarc to PSARC.exe)
6.) Now copy pak22 folder with extracted files to gamefolder /PS3_GAME/USRDIR/build/main
7.) Now you can delete pak22.psarc.
8.) Copy PS3_GAME folder with game to your external fat32 usb hdd GAMEZ/Uncharted2/
9.) Use Backup Manager to load game, should work fine.