Okay so my dad has just bought a new 16" MBP to upgrade from his 2010 17" MBP. Aside from his files like Word documents, photos or music I don't think really any of his apps will work on the new Mac OS. I think he is running Mavericks on the 2010 MBP. Is it possible to connect the two macs together via USB and just transfer the files or folders over? Or do I need to buy an external drive to do it? My dad does not have any external backup drive.