If you are installing on a blank hard drive or want to wipe your old system:
Macintosh HD and click Install.The Mac will reboot several times. The entire process takes 30–60 minutes.
Where is the real app?
/Applications/Install OS X El Capitan.app Mac Os X El Capitan 10.11.6 Installer Dmg Download
❌ Does not support 2016+ Macs (they require macOS Sierra or newer).
Before installing, ensure your hardware is compatible. El Capitan supports Macs that generally date from roughly 2007–2009 to 2015, including: If you are installing on a blank hard
If you have a Mac that ever downloaded El Capitan in the past, you can use softwareupdate:
softwareupdate --fetch-full-installer --full-installer-version 10.11.6
(Note: This command is often broken on modern macOS versions. It works best on macOS High Sierra or Mojave.) Quit Disk Utility
There are two primary ways to get the legitimate file from Apple.
This allows a clean install on older Macs.