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.
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: Select the disk on which you want to install "El Capitan" and press Continue ( note that the icon and name of the disk will be different in your case) (there is usually only one option.Reinstalling macOS does not remove data from your Mac. Read the software license agreement, press Agree to accept it and press Continue: When your Mac comes back up, disable Wi-Fi and leave the Ethernet cord unplugged, as explained in step 2, and press Continue: In the OS X installer window, press Restart: Terminal will confirm that the date has been changed with a line of output that displays the new date. Turn Wi-Fi off or unplug the Ethernet cord, depending on your configuration, to prevent your Mac from connecting to the Internet:Īnd type date 0115124517 (this will reset the date to Jan 1st 12:45 2017). 
When the OS X installer complains that "No packages were eligible for install" and displays this window: Learn more.Īs explained here, OS X 10.11 "El Capitan" fails to install because it is too old (the technical reason being that the signing certificate is no longer valid).īut you can trick the OS X installer into thinking that it is 2017 and it will happily run without any errors. Comments on this answer have been disabled, but it is still accepting other interactions.
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