4 Replies Latest reply: Apr 23, 2013 10:50 PM by 2ndHalfAndy
2ndHalfAndy Level 1 Level 1 (0 points)

Somehow I forgot my Admin/User Password.  I can not change it via my Apple id.  I mistakenly did not click that during setup.  How do I access or change my admin password?  Thank-you for your help. It is frustrating that I did this. 

MacBook Air (13-inch, Mid 2012), OS X Mountain Lion (10.8.3)
  • Bimmer 7 Series Level 6 Level 6 (10,270 points)

    click on the link below and see if that helps you out.



  • Kappy Level 10 Level 10 (262,780 points)

    Forgot Your Account Password


    For Snow Leopard and earlier


         Mac OS X 10.6- If you forget your administrator password


    For Lion/Mountain Lion


        Boot to the Recovery HD:


    Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.


         When the menubar appears select Terminal from the Utilities menu.

         Enter resetpassword at the prompt and press RETURN. Follow

         instructions in the dialog window that will appear.


         Or see Reset a Mac OS X 10.7 Lion Password and

         OS X Lion- Apple ID can be used to reset your user account password.


    If you are unable to boot from an installer DVD:


    (these will only work on Leopard or earlier)


      1. Boot to Safe Mode by restarting and after the chime press and hold down

          the COMMAND-S keys until a black screen with white type appears.


      2. At the prompt, type the following commands pressing return after each

          command line:


         /sbin/fsck -yf


         If you do not receive a "Filesystem OK" message then repeat this command

         until you do.  If after seven tries you still do not receive a "Filesystem OK"

         message, then the system is corrupted and needs to be reinstalled.


         mount -uw /

         cd /private/var/db/netinfo

         mv local.nidb local.old

         rm ../.AppleSetupDone

         shutdown -r now


    The second-to-last command above will cause OS X to think that the operating system is newly installed, and when the new owner starts up the computer it will send him/her to the startup wizard where he/she can start a new user without reinstalling.


    This last method does not actually change a password. It simply removes the user accounts and lets you create an initial admin account as if the computer were new out of the box.


    Reset Admin Password Using The Terminal


    You can reset the password by printing out (or writing down) and carefully following these steps.


    First, find the short name of the admin user on the machine. The easiest way of doing this is by looking at what the directory is called in the Users folder.


    Now, start in Single-user Mode. It should boot into a command line.


    Enter these exact lines. Press RETURN after each.


    mount -uw /

    ifconfig lo0 up

    cd /var/db/netinfo

    netinfod -s local


    Now you'll need that short name. Enter "passwd", a space, and the short name of the admin. For example, if the admin was rather prosaically called "imadmin", you would enter "passwd imadmin".


    The computer will now prompt you to change the password for "lmadmin" (or whatever the short name was). Go ahead and enter a new password.


    Now, enter:





    and the machine will reboot. The admin password should now be changed.

  • 2ndHalfAndy Level 1 Level 1 (0 points)

    Thank-you for taking the time to help out!!  It worked! :-)

  • 2ndHalfAndy Level 1 Level 1 (0 points)

    Thank-you for your repsonse.  I sincerely appreciate it.  I was able to solve it with the previous reply.