How to reset your MacBook to the original factory settings Clone your hard drive and securely wipe the original Remove all your personal data and set up a clean installation of Mac OS X How do I reset a MacBook to factory settings? It’s a question that many Mac OS X users ask prior to selling or handing on a beloved Mac. It’s safer to pass on a Mac with personal information removed, and a cleaning out Mac OS X looks more healthy to the buyer. Our guide to clearing all your information and data from a Macbook enables you to reset Mac OS X to an unblemished factory state. This is the same as if you’d just got the Mac for the first time. Discover how to wipe all your personal information from Mac OS X. See: