If it has a different name, replace MyVolume in these commands with the name of your volume. These assume that the installer is in your Applications folder and MyVolume is the name of the USB flash drive or other volume you're using. Type or paste one of the following commands in Terminal.Open Terminal, which is in the Utilities folder of your Applications folder.Connect the USB flash drive or other volume that you're using for the bootable installer.

You will create the bootable installer from this app, not from the disk image or. It will install an app named Install OS X El Capitan into your Applications folder.

Inside the disk image is an installer named InstallMacOSX.pkg.

Download using Safari and open the disk image on a Mac that is compatible with OS X El Capitan.

The installer for OS X El Capitan will be downloaded to your Downloads folder as a disk image named InstallMacOSX.dmg.

Enterprise administrators: download from Apple, not a locally hosted software-update server.

Download on a Mac that is using macOS Sierra 10.12.5 or later, or OS X El Capitan 10.11.6.

Download on a Mac that is compatible with that version of macOS.

If the installer opens after downloading, close it without continuing the installation process. The installer for macOS Monterey, macOS Big Sur, macOS Catalina, macOS Mojave or macOS High Sierra will be downloaded to your Applications folder as an app named Install macOS.

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