1. Backing up your data:
Turn your PS3 on, connect an external drive (the size depends on how much you want/need to back-up), go to Settings -> System Settings -> Backup Utility -> Backup. Your external drive will need to be formatted in FAT32 but this is easy to do on both Mac and Windows. My 60gb backup took nearly two hours…
2. Remove the original hard drive:
Make sure you have turned off your console and then flicked the off switch on the back. Unplug all cables and follow the above photo to locate the hard drive cover. A small flat head screwdriver will do the job to gently lift it up and off.