![]() ![]() Type or paste one of the commands below Each command assumes that the installer is in your Applications folder and MyVolume is the name of the USB flash drive or other volume you're using. Open Terminal, which is in the Utilities folder of your Applications folder. Enterprise administrators: download from Apple, not a locally hosted update server.ĭownload a macOS installer using the App Store or your browser Use Terminal to create the bootable installer Your Mac must also be compatible with the macOS that you’re downloading. To download a full installer, your Mac must be using macOS High Sierra or later, the latest version of macOS Sierra or the latest version of OS X El Capitan. What you need to create a bootable installerĪ USB flash drive or other secondary volume with at least 14 GB of available storage, formatted as Mac OS Extended 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 you’re unable to install a compatible macOS from the Finder or macOS Recovery. After that, click on the gear icon labelled "Options".These advanced steps are primarily for system administrators and other experienced users who are familiar with entering commands in Terminal. On an Apple silicon Mac, you can also turn on your Mac and continue to hold the power button until you see the startup options screen.Use this key combination to erase your drive before giving it to someone else. If you've never installed 10.12.14 (Sierra), using ⌘ Cmd+ R will install the OS without tying it to your Apple ID.If you didn't have 10.12.14, Sierra, this key combination will not work. On an Intel-based Mac, to install the macOS your Mac came with, no matter how out-dated, press ⇧ Shift+ ⌥ Opt+ ⌘ Cmd+ R.For example, a Mac from early 2012 will not be compatible with macOS 10.15, Catalina. To upgrade your macOS to the most current OS that is compatible with your Mac, press ⌥ Opt+ ⌘ Cmd+ R. ![]() If you're hoping for a different version, check out these alternatives: This key combination tells your Mac to reinstall the same version of macOS that was already installed. Press and hold ⌘ Cmd+ R right after you press the power button. ![]()
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