How to quickly set / change your Mac’s root password [9to5Mac]

In light of the recent security concerns with macOS that allows anyone to easily gain root access ( ), secure your Mac by locking down root. In this brief video walkthrough we show you how to change your Mac's root password using Directory Utility and Terminal.

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21 Comments on How to quickly set / change your Mac’s root password [9to5Mac]

    • there is a security vulnerability discovered today or yesterday which allows somebody to unlock any mac high sierra by typing root as username and living password field empty
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  1. For those who don’t know what “root” is it is a super user that has entire access to system and have privileges in Unix systems. Macos is also a Unix system. Open terminal and type su root then you can delete the filesystem. Be careful while in root.

  2. I thought i had changed the root password already years ago. So after watching the video i typed: su root and typed my password. Terminal said sorry! Hmm so not set!! Glad i watched this video and fixed the problem. Stupid thing is for Linux i always change the root password. Its the first thing i do. But for this everyday Mac it just slipped my mind for some reason. Thanks for posting.

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