How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Mike Your Own Question
Mike, Mac Medic
Category: Mac
Satisfied Customers: 8997
Experience:  Over 20 years IT experience with Apple computers in publishing, marketing and design.
Type Your Mac Question Here...
Mike is online now
A new question is answered every 9 seconds

I brought a MacBook Air OS X 10.10.4 off of eBay and it did

Customer Question

I brought a MacBook Air OS X 10.10.4 off of eBay and it did not come with a good user code or password. And now I cannot get hold of the seller ?
Submitted: 2 years ago.
Category: Mac
Expert:  Mike replied 2 years ago.

Restart the Mac.

Right after you hear the chime, press and hold the Command and the R keys for a few seconds, then release.

When booting is complete, you'll see a window of "OS X Utilities." You won't do anything there. Instead, you'll go to the Menu bar at the top and select Utilities > Terminal. In the terminal window type the following and hit the Return key.


A new window will open.

Click on Macintosh HD and select the desired user account in the popup. Then enter the new password ***** A password ***** is optional. Click "Save."

Go back to the Apple Menu at the top. Select OS X Utilities > Quit OS X Utilities. That will prompt you to restart the Mac.

If all went well, when the Mac restarts normally, you'll be able to log in to the administrator account with the new password ***** defined.