Several games require to boot ONLY from internal HDD as they require 4+gb files, which do NOT fit on a standard FAT32 HDD (aka, your external HDD). However many of those games use a format called '.psarc' to compress large files (like zip or rar files on PC).
Luckily, those psarc can be decompressed into smaller files that do fit on your external HDD! Here's how (thanks to PS3NEWS for the guide!)
1) Download PSARC.zip PlayStation Archive Utility (or PARC GUI v0.2 update by TeamKidneyBean if you prefer) from here:
Code:
http://www.multiupload.com/8HNLJKWBSH 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.
WARNING!! NOT all games work off external HDD after having PSARC extracted! Please report any problems! This method has been tested by other users and confirmed working for:
-Uncharted 2
-Killzone 2
-Front Mission Evolved (check guide):
[spoiler]levels.psarc is 5.78GB. For external, extract levels.psarc with PSARC.exe & zlib.net.dll. Both files should be in the same place the psarc file is, i.e. levels.psarc in this case. You'll have a levels folder with folders and files in. Arrange the structure so that you have one FM folder under USRDIR. In FM you must have 2 folders, COMMON and PS3. In PS3 folder you have ANIMATION, EGRAPHICS, GAMEDB, LEVELS, MOVIES, PARTICLES, SCRIPTS, SOUND, and TEXT. In COMMON you have BIN, FONTS, LEVELS, LIPSYNC, and SOUND, and a bunch of files. Delete (or move to another folder in case you need it later) levels.psarc. Delete PSARC.exe & zlib.net.dll (or move it to anther folder if you want to use it on another game). Enjoy!
-Tekken 6
Know any other games that can have their psarc extracted? POST it and you'll get +Rep and added to my Contributors sections! Thanks!