Typically a macOS Sierra installation takes a bit over an hour, but it can vary depending on. macOS Sierra will download and install, rebooting the Mac when completed. When the Installer launches, go through the simple steps and select your Mac hard drive to update to macOS Sierra. When the new owner starts up the Mac, they can use their own information to complete setup. Go ahead and download macOS Sierra now from the Mac App Store. If you're selling, trading in, or giving away your Mac, press Command-Q to quit the setup assistant without completing setup, then click Shut Down. 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. This game will have another episode Thank you. 2:21pm New episode Hello, finished the fifth chapter today. Allow installation to complete without putting your Mac to sleep or closing its lid. All Discussions Screenshots Artwork Broadcasts Videos News Guides Reviews.

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. This site contains user submitted content, comments and opinions and is for informational purposes only.If the installer asks to unlock your disk, enter the password that you use to log in to your Mac.Click Continue, then follow the onscreen instructions.Reinstalling macOS doesn't remove your personal data. When you see a window with the option to reinstall macOS, your Mac has started up from Recovery.

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