Mac os x lion reset password single user mode

You are given a new prompt a few seconds later. This command enables you to make changes to the disk. This command should not generate any output if all runs correctly. If it generates an alert, double-check your typing. If you left off the -c2 option to the ping command, you can tell it to stop pinging by pressing Control-C. You see a much shorter list than you previously saw in Activity Monitor.


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At process ID 1, you see the system launchd. Process ID 2 is launchctl , which launchd uses in this case to manage the startup process. Process ID 3 is the command shell with which you are interacting. The last process is your ps command. The OS is in a very minimal state. Usually, when you need to examine logs in single-user mode, it is because you want to find out what happened just before the system crashed, so starting at the end is more convenient than starting at the beginning.

Unfortunately, it does not know how large the screen is, so the display can get confused as you move backward and forward. If you lose the password to your administrator account, you now know several ways to reset its password; but if the account becomes completely unusable, this will not allow you to regain control of the computer.

In this section, you will see how to use single-user mode to create a new administrator account. This section of the exercise involves deleting files, and since you are running as the root user, you are capable of deleting anything or everything. It is important to be careful when you are running commands as the root user. If pressing Tab does not make it autocomplete, you have not typed the command correctly and must correct it and try again. Note that you cannot use the mouse to select text to change, although you can use the Left and Right Arrow keys to move backward and forward on the command line.

If you cannot get the command to autocomplete, something is still wrong and you should not proceed with the exercise.

AppleSetupDone file is a placeholder file, which indicates that the Setup Assistant has run on this computer; deleting it makes the computer re-run the Setup Assistant the next time it starts up. The computer exits single-user mode and continues starting the operating system.


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  6. Verbose mode.
  7. With the. AppleSetupDone file gone, it runs the Setup Assistant again just as though this were a new computer. If you are performing this exercise in a class, enter newadminpw in the Password and Verify fields. If you are performing this exercise on your own, you should select a more secure password for the New Admin account. See All Related Store Items. Subscribe to our RSS feed. Follow our Twitter. Advertise with us. Submit an Apple-related tip or fix. Tell a friend to "Go MacYourself.

    OS X Tricks.

    Reset OS X Account With the Terminal In Single-User Mode | Apple Tech | Accounting, Mac

    Reset password using Lion Recovery If you bought a brand new Mac with Lion pre-installed, the hard drive includes with a recovery partition that gives you access to a bunch of different tools. In the Terminal window type resetpassword and press Enter. Use the Reset Password utility to select your hard drive, choose your user account, and enter a new password.

    Reset Lion password with Single User mode Anyone running Mac OS X Lion can take advantage of this method: Shut down your Mac and turn it back on while holding down the Command and S keys at the same time until your see a black screen with white text. This is known as Single User mode.

    Change the Admin Password with Mac OS X Single User Mode

    At the prompt, type fsck -fy and press Enter. Type dscl. Press Enter. Type reboot and press Enter.

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