I will be getting an iMac to replace my 2010 Mac Mini. So since it’s been several years since I’ve had to update computers, what is the best and easiest way to transfer all my data/pictures/etc. to the new iMac? I have one of those western digital my passport drives that I upload to occasionally. Would this work or maybe I need to use the migration assistant? Not sure exactly how to use it but I can figure it out if it’s the easier method.