If your Mac starts up to error -1008F
Your Mac tried unsuccessfully to start up from macOS Recovery over the internet.
 
                                    
                                
                                    
                                        A globe with an exclamation mark means that your Mac tried to start up from macOS Recovery over the internet, but couldn’t. If this is displayed with error -1008F, one of these solutions should help.
- Start up from macOS Recovery, but use Option-Command-R at startup instead of Command-R or Shift-Option-Command-R. 
- Or disable Activation Lock. When you've finished using macOS Recovery, you can enable Activation Lock again. 
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