First of all, I am only 13 so bare with my horrible spelling and non-clear directions. Secondly: I AM WARNING YOU, I AM NOT RESPONSIBLE FOR YOU SCREWING UP YOUR PS3, USE AT YOUR RISK, THIS IS SHOULD NOT BE USED FOR PIRACY REASONS, I AM NOT HELD RESPONSIBLE FOR THE USES OF THIS GUIDE. PLEASE, DO NOT DUPLICATE OR PUT ON OTHER WEB SITES WITHOUT PERMISSION, AND IF YOU DO, DO NOT PUT IT UNDER YOUR NAME. Any questions, please send me a private message or comment on this Forum post. First of all, you need the following: A Sony Playstation 3 A 2.5 inch Hard Drive used on laptops for a simple upgrade or A 3.5 inch SATA Hard Drive for a preparation for ISO Loaders. A 7-Pin male to female SATA cable. Step 2: On the side of your Playstation 3, there should be a cover that says HDD. Remove the cover. Step 3: There will be a blue screw, remove the screw. Then you move the hard drive with the latch to the right and pull it out. To put a 2.5 inch Hard Drive, remove the screws on the side of the tray of the retail hard drive is on, replace the hard drive with the 2.5 inch hard drive you bought, screw the screws back in, place the hard drive to the right side of the hard drive place of the system slide it to the left and screw back the blue screw you took out earlier. It'll ask you to format it, say yes, it'll format and it'll restart. Keep reading for the 3.5 SATA HARD DRIVE guide Once you take out the Sony Playstation 3 hard drive, connect your 3.5 inch SATA hard drive to the 7-PIN cable Male to Female I said earlier, then get a pair of pliers. With the pliers, grab the end part of the cable and connect the cable to the hard drive slot of your Playstation 3 on the left side, you'll here a almost silent click sound when you successfully hooked it up. THIS IS RECOMMENDED: THE PS3 MAY NOT BE ABLE TO HANDLE THE POWER OF THE HARD DRIVE, SO CONNECT TO A ENERGY CORD AND PLUG IT IN SEPRATE FROM THE PLAYSTATION 3 AC CABLE SO IT HAS A POWER SUPPLY OF IT'S OWN. Turn on your Playstation 3, it'll ask to format it, say yes, when its done formatting, reset it sand there you go!!! You have successfully hooked a 3.5 inch SATA hard drive to your Playstation 3, YEAH!!!!