1
How to launch psn games from external HDD.

1- Unpkg your PSN Game With PkgView v1.2.
2- Make New Folder on UnPKGed Game Folder and rename your New Folder to (PS3_GAME) Then Put All Items (Files And Folders) on PS3_GAME Folder.
3- copy your UnPKGed Game Folder to GAMEZ Folder on your Ex.HDD.
4- Make New Folder On Desktop And Rename it (For example PSN) Then Open it and Make New Folder You should Rename it like this ( USRDIR ).
5- Copy and Past those Files (From your UnPKGed Game Folder) to PSN Folder (PARAM.SFO,ICON0.PNG,PIC1.PNG and PS3LOGO.DAT) and Eboot.bin to USRDIR folder
6- Make PKG of Your PSN Folder.
7- Go To Your Ps3 And it Install Your PKG.
8- REBOOT YOUR PS3.
9- Start The Game Diskless using MultiMAN
10- Enjoy!
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2
How to launch psn games from external HDD (WITHOUT MAKING PKG)

1-Install Your PKG on PS3 internal HDD using "★ Install Package Files"
2-Start multiMAN, go to File Manager (SELECT+Start), open /dev_hdd0/game in left panel and /dev_usb00/GAMEZ in right panel
3-Create a new folder on external HDD (eg. /dev_usb00/GAMEZ/GAMETITLE)
4-Copy the game's folder (eg. /dev_hdd0/game/NPUA00000) to the new folder (eg. /dev_usb00/GAMEZ/GAMETITLE)
5-Rename the game's folder NPUA00000 on the external HDD to PS3_GAME (eg. /dev_usb00/GAMEZ/GAMETITLE/PS3_GAME)
6-Open the folder /dev_hdd0/game/NPUA00000/USRDIR and delete all the subfolders and files of the game, except the EBOOT.BIN
7-Start The Game Diskless using multiMAN (★ /app_home/PS3_GAME/)
8-Enjoy!

The main difference is that it is not necessary to make a PKG. Everything can be done on the PS3.

Tested Working with this method:
-Beyond Good & Evil HD [NPEB00435]
-Burnout Crash [NPUB30464]
-Disney's Bolt [NPUB30556]
-FIFA 12
-God of War® Ghost of Sparta HD [NPUA80636]
-ea sports mma
-Crysis 1 [NPUB30302] (working by leaving the drm.edat system.cfg files also)
-Resident Evil 4
-God of War® Chains of Olympus
-

Tested Not Working:
-tom clancy`s
[-color=yellow]Driver[/color]: San Francisco [NPEB00632]
-InFamous 2: Festival of Blood [NPUA80657]
-Lara Croft and the Guardian of Light [NPUB30225]
-Ratchet & Clank Future: Quest for Booty [NPUA80145]
-rainbow 6
-vegas 2
-section8 (Blackscreen,Doesn't work)
-assasins creed 1 (Blackscreen,Doesn't work)