Mac modify user name and password method

First, click on the Apple menu bar above the Apple icon, then select the System Preferences settings, as shown in the following figure:

Mac System Preference Settings

Second, next in the system preferences, we find the "User and group" settings, and click to enter, as shown in the following image:

After opening the user and Group settings option, now on the left to select the users need to modify, here Select the Administrator user, and then in the right password entry, you can see the "Full name" and "Change Password" operation, if it is necessary to modify the Apple Computer users, we directly modify the full name, if you need to modify the password, we click Change password, as shown in the following figure.

Four, the last in the revised Password pop-up box, enter the old password, and then enter a new password two times, complete, click on the bottom of the "Change password" to save.

At this point we have successfully completed the Apple Computer username or password changes, the administrator's password changed, it is equivalent to modify the power-on password (if the power-on password is enabled).