To enable Verbose booting, you will need to launch the terminal (while logged into an account with administrative permission) and type (or copy and paste the following code):
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sudo nvram boot-args="-v" |
Press return (if it asks for a password, enter the password of the administrative account you’re logged into)and reboot your machine to see your new geeky text splash screen!
To disable Verbose booting follow the same steps but instead use:
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sudo nvram boot-args= |