Previous 1 2 Next 15 Replies Latest reply: Dec 9, 2012 3:13 PM by baltwo
Marco Angeli Level 1 Level 1



just installed mountain lion on my iMac early 2008 (downloaded from App Store)


I'm trying to run apple hardware test by pressing "D" or "ALT + D" but nothing happens...


any suggestions?



Solved by baltwo on Nov 16, 2012 11:52 PM Solved
You can't. Call AppleCare and request replacement discs. They're available for a nominal S&H charge.
Reply by Linc Davis on Nov 16, 2012 9:21 AM Helpful
To activate the Apple Hardware test you must restart your iMac and hold Option key + "D" before the Apple Chimes. That only works on a Mac that's capable of Internet Recovery, which a 2008 iMac is not.
Reply by baltwo on Nov 16, 2012 7:55 PM Helpful
Appears you got bit by ML which seems to blow away the AHT. See my solution at on how to restore it and get CMD+D to work on your machine.

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