OS X Mountain Lion (version 10.8) is the ninth major release of OS X (now named macOS), Apple Inc.’s desktop and server operating system for Macintosh computers. OS X Mountain Lion was released on July 25, 2012 for purchase and download through Apple’s Mac App Store, as part of a switch to releasing OS X versions online and every year. Named to signify its status as a refinement of the previous Mac OS X version, Lion, Apple’s stated aims in developing Mountain Lion were to allow users to more easily manage and synchronise content between multiple Apple devices and to make the operating system more familiar. Mountain Lion is also the final version of OS X to be developed under the supervision of then-OS X head Scott Forstall.
The root user, or superuser, is a special user account in OS X that can modify and delete critical system files. By default, the root user is not enabled.
Enable the root user
- Choose Apple menu > System Preferences, and then click Users & Groups.
- Click the lock icon to unlock it, and then type an administrator name and password.
- In the Network Account Server section, click Join or Edit.
- Click Open Directory Utility.
- Click the lock icon to unlock it, and then enter your administrator name and password.
- Choose Edit > Enable Root User, and then enter a root user password in the Password and Verify fields.Be sure to specify a secure password.