Wait wait, let's do this in steps. So your jailbroken?
You need to rip YOUR own games to your PS3 with something like multiMAN. Also most games require you to have a PS3 blu-ray (doesn't matter which game) inside the PS3 in order to play games from HDD. It's as simple as that. Now newer PS3 games cannot be played since they require a higher firmware (3.6x+) some games can't still be managed to work with a little tinkering with the EBOOT file. But there are only a FEW exceptions to this, most won't work.