HT201257: Using Apple Hardware Test

Learn about Using Apple Hardware Test
marcc11
Level 1 (0 points)

Q: This no longer works on Lion-based Macs

It seems that booting my Macs holding the D no longer enters the system into AHT. Is there still a consumer way to do this, or do I need to simply bring my Mac in for service? (which I'll probably need to do anyway, since every Mac that I gingerly took care of always blew a disk before the 3-year AppleCare contract was up). I'm grateful it happens just BEFORE 3 years. ;-)

MacBook (13-inch Aluminum Late 2008), Mac OS X (10.7.3)

Posted on Apr 17, 2012 10:59 AM

Close
marcc11

Q: This no longer works on Lion-based Macs

  • All replies
  • Helpful answers

  • by Kappy,

    Kappy Kappy Apr 17, 2012 11:03 AM in response to marcc11
    Level 10 (271,101 points)
    Desktops
    Apr 17, 2012 11:03 AM in response to marcc11

    For it to work you need to use the original installer disc that came with the computer. Then it should work by starting from the original disc, and after the chime immediately press and hold down the "D" key.

     

    Now, if it so happens that your model had the AHT embedded in the hard drive, and you have since repartitioned the hard drive, then the AHT has been effectively removed. And, those models did not have an alternative AHT provided on their original discs. So, you would need to take it to an Apple store or service center for any diagnostics.

  • by Courcoul,

    Courcoul Apr 17, 2012 11:08 AM in response to marcc11
    Level 6 (14,193 points)
    Apr 17, 2012 11:08 AM in response to marcc11

    Well, that may be some weird interaction between Lion and the "mature" hardware, cause the AHT works just fine and without resorting to a trip to Apple's Servers, when I press D at startup on my Late 2011 MBP.

     

    Edit: There you have it! As always, Prof. "Flaming Fingers" Kappy to the rescue...