Install macOS Follow the onscreen instructions in the installer. Check compatibility If a macOS installer can't be used on your Mac, the installer will let you know.ĭownload macOS It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs macOS and related firmware updates. Please allow installation to complete without putting your Mac to sleep or closing its lid. If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper. It might be easiest to begin installation in the evening so that it can complete overnight, if needed. Follow the onscreen instructions in the installer. Open that app from your Applications folder to begin installing the operating system. Safari downloads the following older installers as a disk image named InstallOS.
After downloading from the App Store, the installer opens automatically. Safari uses these links to find the old installers in the App Store. It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection. Time Machine makes it simple, and other backup methods are also available. If a macOS installer can't be used on your Mac, the installer will let you know. Apple recommends that you always use the latest macOS that is compatible with your Mac. To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date.
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