3 Replies Latest reply: Nov 9, 2012 7:56 AM by cbs20
ssbarnea Level 1 (0 points)

How can I start AHT without an additional install disk - OS X 10.8 was upgraded using App Store so I do not have an install disk on it,


When I keep the D key presses after pressing the power button, I do see only the plain gray screen. Few seconds after I release D key, the system will boot normally - if I keep pressing the D key, the system will just stay with the gray screen on.


I do want to run AHT to test the memory as I do get 1-2 kernel panics a day, and have no kernel extensions.

MacBook Pro, OS X Mountain Lion (10.8.2), Early 2011 - MacBookPro8,2 8GB