In Unix style operating systems Root is a special user, different than administrator who has high privileges and rights to make any type of change to the system. The Root user doesn’t appear in user accounts on Mac. By default Root user is disabled and this is recommended that  after conducting the required change through Root, disable and logout from it and work on Mac system via regular or admin user accounts.

Here is the method written bellow to learn that how to enable or disable the root user on Mac, so follow the steps to do that after a jump.

see:
Reset mac root password
Recover Forgotten Mac password

How to Enable the Root on Mac

Step 1

Click on Finder

Then click Go menu and click Utilities

Step 2

Click on Directory Utility

On the following window click on lock to unlock it

On this pop-up screen, enter administrator name and password and click OK

Now, its unlocked to proceed further

Step 3

Click on Edit menu option and then on Enable Root User

Enter Root password whatever you want and re-type in Verify text field and press OK

Step 4

Now, the Root is enabled. Logout from your current user account and Login with the user name Other, that’s the Root so enter the Root in Name field and password which you’ve set in the above steps for root to get login. Make your required changes in system whatever you want.

How to Disable the Root

Step 1

Just logout from Root and Login to the other Admin account. Then Click on Finder >> Utilities folder >> Directory Utility. The following screen will appear, so click on lock to prevent further changes

Now click Edit menu option, you’ll see the Root is disabled