The Ultimate Guide to Mac OS X El Capitan 10.11.6: How to Download the Official Installer DMG

Introduction: Why El Capitan Still Matters

Step 1: Official Download Method (Using Apple’s hidden link)

Apple provides a direct link that works from any modern Mac or even Windows (though you’ll only be able to create a USB on a Mac).

The Mac will reboot several times. The entire process takes 30–60 minutes.

Follow the onscreen prompts. When asked where to install, select your current startup disk.