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I try to make a long AHT test on my mid 2014 Macbook Pro. When I press D (same with alt-D) on boot it says :

Starting Internet Recovery
Restart           Shutdown

After a few seconds, it launches the basic AHT test.

But the Apple document says it should show an icon where I can launch the long AHT test.

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From Apple's documentation on AHT:

Some Macintosh computers that shipped with OS X Lion and later support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT. An Internet-enabled connection via Ethernet or Wi-Fi is required to use this feature. Internet-based AHT functions the same as AHT on the hard drive or flash storage outlined above.

What you are using is AHT, it just doesn't have it pre-installed on your hard drive.

EDIT: You should have the option to perform extended tests, it will be a checkbox you have the option of selecting before running the tests

EDIT 2: As your mac was made after 2013, you are forced to use Apple Diagnostics, which is why I assume you can't have access to the extended test options you see on the AHT documentation.

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  • Hmm ok, it seems we can't perform long AHT on the new Mac products ? Oct 23, 2014 at 15:44
  • According to the documentation it appears that way, unfortunately. Probably Apple trying to steer users away from self diagnostics so the genius bar looks busy! Oct 23, 2014 at 15:51
  • And do you know an Apple software that can make real tests on RAM ? Oct 24, 2014 at 6:08
  • I'm sure what you're using (Apple Diagnostics) would do 'real' tests on RAM. I can't speak first hand as I've never used the newer Apple Diagnostics. Oct 24, 2014 at 8:24
  • Well, it does a 2 min test to check all the hardware. When just RAM needs hours to be tested. Oct 24, 2014 at 11:46

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