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Andrew James
Andrew James, Senior Systems Engineer
Category: Mac
Satisfied Customers: 11
Experience:  RedHat certified. Ansible & Salt Ninja. Professional background running the automation platform for a major internet firm
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I've changed my apple ID but didn't reset mac first ... now

Customer Question

i've changed my apple ID but didn't reset mac first ... now i can't log in
JA: Is there a sign in error? Do you know your password *****?
Customer: just a second
JA: Have you installed any updates recently?
Customer: yes, all my problems started after a recent update ... not sure if that's relevent or not
JA: What troubleshooting have you tried?
Customer: tried multiple ways of logging in ... i reset the apple ID on another computer ...
JA: Anything else you want the Mac expert to know before I connect you?
Customer: nope
Submitted: 12 months ago.
Category: Mac
Expert:  Andrew James replied 12 months ago.


You will likely get remote assistance requests from the website. Feel free to ignore those. I'm going to type you up instructions now on how to fix this, give me just a few moments.

Expert:  Andrew James replied 12 months ago.


First you will need to reboot your mac.. Right as it reboots you want to hold down CMD+S . It will ask you for your password, this will be the last password ***** computer successfully authenticated with. It doesn't know your password *****

You will end up at a command promopt, this is MAC's Single User Mode. Unfortunately all of this is non-networked so I can't help you through the steps.


mount -uw /

From there type

launchctl load /System/Library/LaunchDaemons/

These two commands will mount your filesystem in a way that we can write to and start user services.

Now type


It should say something like "New password ***** root:"

Type in your new password *****

now type exit a few times until you end up at the login page for your laptop. You should now see the option to login as other user...

The other user is "root" and that newly set password. You will now be in! From there you can go into system settings (under the apple) and configure your user how you want with the proper apple ID.

After you've done that, login as your normal user, and type dsenableroot -d .. That will turn off the root user.

That should get you back going!