If it is and you're afraid to go it alone, check out ifixit for more guides. NOTE: your computer may be slightly different. I cant seem to find a definitive answer.

And that's it! Everything unscrewed and removed! Now let's put it back together again. OP wrote: 'Seagate BarraCuda 1TB Internal Hard Drive HDD 2.5 Inch SATA 6 Gb/s 5400 RPM 128MB Cache for PC Laptop (ST1000LM048) is compatible to replace my original internal hard disk that came in my Mackbook Pro (MD101ll/a) mid 2012 model. Remove the four posts on the side of the hard drive with the T6 screwdriver. Remove those and you'll be able to lift up the hard drive and unplug it. It's being held in place by 4 more screws. With the panel removed you can see the hard drive. Specifications: 15-inch MacBook Pro with 2.2GHz Core 2 Duo processor and 2GB of RAM, 32GB SATA solid-state disk installed, 120GB external hard drive in. Be sure to place them somewhere safe so they don't roll away into oblivion. Use the #00 screwdriver to remove all the screws on the back. So shut down your laptop and flip it over. But since you've already gotten this far you're probably both inclined to get it done AND have a machine past warranty anyway. CHIPAL 10pcs SATA 3.0 2nd HDD Caddy 9.5mm for 2.5 7mm 9mm Hard Disk SSD Case for Macbook Pro Air 13 15 17 SuperDrive Optibay. We recommend selecting Mac OS Extended (Journaled) for older MacBooks. It is easy to format the internal hard drive in Mac using the disk utility feature with the quick steps mentioned below: Step 1. To prepare the drive, you’ll need to select Erase to format it in preparation for your data transfer. Opening up your MacBook Pro opens you to the possibility of messing something up and voiding your warranty so if that bothers you you can just sit tight with what you have. Connect your new hard drive to your computer and launch Disk Utility.

Internal hard disk for macbook pro