iMac (21.5-inch Mid 2010)
When I boot normally it sticks on a grey screen with the Apple logo.
Safe boot works fine, but when I hold down "D" it just sticks on the grey screen again, as if "D" does nothing.
iMac, OS X Mavericks (10.9.1)
Posted on Feb 1, 2014 2:16 PM
Q: No AHT when I hold down D
Impressive work!