Re-Create Administrator Permissions on Mac User Accounts

Before re-creating the admin group there is a way to check if the admin group has definitely been deleted, to do this log into the Mac with the root user account, then open Terminal and type command
```
dscl . –read /Groups/Admin
```
- If the output comes back with the error below, this would indicate the admin group from the OS has been deleted

DS Error: -14136 (eDSRecordNotFound)

Then type,

dscl . -create /Groups/admin RealName Administrators

Next type,

dscl . -create /Groups/admin PrimaryGroupID 80

Then type,

dscl . -create /Groups/admin Password \*

Finally type,

dscl . -create /Groups/admin GroupMembership root

Now the admin group has been re-created you can now apply administrative rights on the primary user account and/or any other accounts on the Mac, this can be done by opening System Preferences > Users & Groups clicking on the relevant user and checking “Allow user to administer this computer”. A message stating “You must restart the computer for your changes to <Users>’s administrator settings to take effect.”

Restart the Mac and then login with the relevant account, i.e. Mac Usernavigate back to System Preferences > Users & Groups and the accounts chose in the previous step should now be an Admin account.