On a standard PS3, PKG and RAP are invisible—Sony handles both. On a modified console, understanding their relationship is essential. The PKG delivers the game; the RAP unlocks it. Neither works fully without the other.
file is a compressed archive used by the PS3 to install software, including digital games, updates, and DLC. : Think of it as a for Mac or a Ps3 Pkg And Rap Files
FAT32 has a 4GB file limit. If your PKG is 15GB, you cannot copy it to a FAT32 drive. On a standard PS3, PKG and RAP are