In the Recovery app window, select Reinstall for your macOS release, click Continue, then follow the onscreen instructions. If you have ever installed that version on your Mac, no matter what version (or no version) is currently installed, you have these options. Choose Apple menu > Shut Down, press and hold the power button until Loading startup options appears, select Options, click Continue, then follow the onscreen instructions. However, you have other keystroke options depending on which version was previously installed.Īpple changed the start keys with macOS Sierra version 10.12.4. (If your main macOS partition had system files become damaged or missing, your other files will remain intact, as this reinstallation only installs and replaces system files and apps.)Ĭommand-R should reinstall the latest version of macOS that you had previously installed on this computer. When complete, it should reinstall macOS Recovery and reinstall macOS on the main partition. Because of this, you should ensure that all of your important documents. You should then be prompted to connect to a Wi-Fi network, and you enter a password.Īt this point, the Mac should start to download the recovery files from the internet and show a status bar. Reinstalling OS X will erase all of the data on your computer. Received an old MacBook from a friend and we have the reinstall disks but the system won’t recognize our new Apple ID (noted from a previous post that it works with the original user’s Apple ID). Use this key combination to reinstall the latest macOS that was installed on your system, or to use the other apps in macOS Recovery. On disk utility click the Macintosh HD then the erase tab on the right. Immediately press and hold one of the following key combinations until you see the startup screen: Command-R: Start up from the built-in macOS Recovery System. Before clicking reinstall click disk utility. Still holding CMD + R wait for recovery screen to appear that gives reinstall option. The Mac should recognize that there’s no macOS Recovery partition installed, show a spinning globe. Reinstall MacBook OS X Maverick without original Apple ID. With Mac off Hold CMD + R and tap power button to turn on computer. Start up your Mac from a shut down state or restart it, then immediately hold down Command-R. Clean installing previous versions of macOS usually involves creating a bootable copy of the macOS installer on a flash drive or USB stick and then reformatting your drive before installing the.
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