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WIPE MAC CLEAN AND REINSTALL INSTALL
Use the App Store to download and install the latest macOS or an earlier macOS.You can also use these methods to install macOS, if the macOS is compatible with your Mac: If you just erased your entire startup disk, you might be offered only the macOS that came with your Mac, or the closest version still available.If the Mac logic board was just replaced, you might be offered only the latest macOS that is compatible with your Mac.Or you can use Option-Command-R during startup to be offered either the latest macOS that is compatible with your Mac, or in some cases the macOS that came with your Mac or the closest version still available. On an Intel-based Mac, you can use Shift-Option-Command-R during startup to be offered the macOS that came with your Mac, or the closest version still available.When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions: When the new owner starts up the Mac, they can use their own information to complete setup. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. It boots to OSX Utilities but when I try to reinstall OS it directs me to the App Store (after putting in my iCloud details) it fails and says This item is temporarily unavailable. Your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.Īfter installation is complete, your Mac might restart to a setup assistant. So I have an old MacBook Air (Late 2008), I decided to wipe clean and reinstall a newer version OS (10.11). Allow installation to complete without putting your Mac to sleep or closing its lid.If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
WIPE MAC CLEAN AND REINSTALL PASSWORD
If the installer asks to unlock your disk, enter the password you use to log in to your Mac.To begin installation, select Reinstall macOS from the utilities window in macOS Recovery, then click Continue and follow the onscreen instructions.įollow these guidelines during installation: Enter the password you use to log in to your Mac, then click OK. Don't see this option Erase Assistant opens and asks you to sign in with your administrator credentials. From the System Preferences menu in the menu bar, choose Erase All Content and Settings. Reinstalling macOS does not remove data from your Mac. From the Apple menu in the corner of your screen, choose System Preferences.