Make sure that the installer is in the Applications folder of your startup disk. Find out which macOS your Mac is using.Įnterprise administrators: Download from Apple, not a locally hosted update server. Use the bootable installer Download a full macOS installer from Appleĭownload macOS from the App Store or your web browser using the links provided in How to download and install macOS.ĭownload from a Mac that is using the latest version of OS X El Capitan or later and is compatible with the macOS you're downloading.

Use Terminal to create the bootable installer

You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful if you want to install macOS on multiple computers without downloading the installer each time, or if you can't install a compatible macOS from the Finder or macOS Recovery.ĭownload a full macOS installer from Apple These advanced steps are primarily for system administrators and other experienced users who are familiar with entering commands in Terminal.

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