I have an older Macbook Air that I've have since 2012 or so. I have used it to backup my phone for a while and now my Mac storage is completely full. I would like to take all of the information off of my computer and put it on a hard drive so that I can update all of my software on my Mac to make it more usable. From then on, i would use this hard drive for storage instead of using my computer, just to keep it running as best it can. I took my computer to Best Buy and asked in they had any hard drives compatible to for 10.7.5 and the guy said that I need to find one online. Does anyone have a suggestion for a hard drive that would do everything that i need it for?