Banishing the Menu Bar on Your MacBook with El Capitan
This feature on the MacBook might seem somewhat unsettling to long-time OS X power users: El Capitan allows you to automatically hide the menu bar, just like the Dock’s auto-hide functionality.
Why is this unnerving? It’s because the menu bar has been a rock-solid part of OS X since the very first version (called Cheetah, which was introduced way back in 2001), and power users just expect it to be there! However, the idea behind a hidden menu bar is the same as the hidden Dock: You gain additional screen real estate for your applications, which can make a significant difference on smaller MacBook screens.
“But isn’t the menu bar technically ‘hidden’ in full-screen view?” Yes, that is true, but full-screen view is a special case — in El Capitan, you can banish the menu bar from your Desktop, which is a completely different kettle of fish!
To hide the menu bar on your MacBook, click the System Preferences icon in the Dock, click the General icon, and click the Automatically Hide and Show the Menu Bar check box to enable it.