Mac re-build Administrator account

Add user on Mac not successful, change the original Admin user group, account type becomes normal user.

Baidu how to re-add the administrator: After modifying the user name on the MAC, unable to log in with the Administrator account and password.

Following the above method, there is a problem:

1, Command + S, after the line conversation, go to login.

Repeated several times after actually logged in to enter the command line page, but the inside of the word super small (4K screen reason?).

2,/sbin/mount-uaw enter RM var/db/.applesetupdone Enter reboot Enter

Prompt no file found

Improvise, use the command LS var/db/to list problems in the name

Find the file most like is Var/db/.applediagnosticssetupdone

(BU) (xiang) (Zhao) modified (ke) for (FU):

/sbin/mount-uaw Enter

RM Var/db/.applediagnosticssetupdone Enter

Reboot Enter

The system actually went in and reinstalled the page.

Once the installation is complete, set up an administrator account.

Then go to the Control Panel and change the normal user to administrator.

Mac re-build Administrator account