Activate the ROOT USER in MAC

The root user, or superuser, is a special user account in Mac OS X that has read and write privileges throughout the file system. By default the root account is not active.

IMPORTANT: The root user can edit and delete important system files not available to normal users. To prevent damaging the system by moving or deleting important files, use extreme caution while working in the root account.

To enable the root user:

• Open Directory Utility, located in the Utilities folder in the Applications folder.
• Click the lock to make changes. You will need to enter an administrator name and password.
• Choose Edit > Enable Root User.
• Enter a secure password for the root user, then enter it again in the Verify field, and click OK.

The root user should be used only for specific administration or monitoring tasks. After completing a task as the root user, log out of Mac OS X and log back in using a normal user account.

To ensure the security and stability of your system, disable the root user when you are not using it.

For more information: Click on FINDER--> go to HELP--->type ROOT ---> it will guide you how to enable the root user