Well, I tried it, and it worked just fine!
I copied Mafia II to LAUN12345/GAMEZ/Mafia.2.PS3 using FlashFXP and it worked fine. I was playing Mafia II until about 1AM this morning.
EDIT: this is for the INTERNAL drive btw. I don't know if it will work the same for an External HDD but I would assume it does.
Last edited by indecks; 09-27-2010 at 02:57 PM.