Hi guys! I've decided to upgrade the HHD in my late 2011 MBP to a SSD. I have just recieved my Corsair Sata 3 GT 240gb and will be cloning my HDD over the weekend. I have never cloned nor changed a HDD in a MBP before, but I will follow the steps in this guide; https://discussions.apple.com/docs/DOC-4122 I think the guide is pretty good, but there's a few questions I would like to ask just to get the whole process down as smooth as possible. First of all I was wondering if need to change anything like you would do in the BIOS on a windows machine? And after I have used CCC to clone and switch etc, will I need to format my old HDD before using it as an external drive (with a case) or can I just plug it in and use it straight off the bat? EDIT: If I want to do a clean installation instead of cloning, will I then have to repurchase apps through appstore and the Microsoft Office package? If someone could shed some light on this, or just give me some general tips on the whole process I would be really grateful!