
If the installer offers the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.If the installer asks to unlock your disk, enter the password that you use to log in to your Mac.


If you're asked to select a user you know the password for, select the user.To select a Wi-Fi network, use the Wi-Fi menu in the upper-right corner of the screen. You might be asked to select a Wi-Fi network or attach a network cable.Keep holding the keys until you see an Apple logo or spinning globe.Shift-Option-Command-R: When you press and hold these four keys at startup, macOS Recovery might offer the macOS that came with your Mac, or the closest version still available.Option-Command-R: When you press and hold these three keys at startup, macOS Recovery might offer the latest macOS that is compatible with your Mac.

