ok i am gonna show you how to make ANY ps3 harddrive work in your ps3 without formatting it so you dont loose info on it. this is great for someone who got a new ps3 and wants to use their old hdd in it.
Here is another way to do it. If YOU HAVE PROBLEMS WITH THIS METHOD TELL ME ILL HELP THE BEST I CAN THIS SHOULD WORK. I HAVE TESTED ON MULTIPLE CONSOLES. put your real hdd in the system and go into the system restore menu (hold power until turns on and off, then hold again until two beeps) then have nothing else in your console usb wise and then go to system update and press start and select then change your hdd and let it go for a couple of seconds.. then shut the system off and turn it on again with the new hdd still in it and the hdd will work!!
hdd seagate - toshiba now
firmware 3.41 - 3.55 now
60gb - 500 gb now
AND UR DONE