Comments on: Get Apple Hardware Test Boot Mode Back on Some OS X Lion Macs

By: Mike N

Mike N — Mon, 01 Oct 2012 20:50:57 +0000

I found that option-d worked, but d and cmd-d did not, on my early 2011 MacBook pro. This was with the ethernet cable network plugged in, and it ran an Internet version of the software.

By: wza

wza — Fri, 30 Sep 2011 16:59:46 +0000

interesting that you need the superdrive hardware that seems to break with so many people to run a hardware test. mine’s busted on a 6 month old imac. i have no idea if it’s actually broken hardware or a firmware issue of some kind, as I can’t run the test without a drive.

sighs upon sighs.

By: frank

frank — Tue, 13 Sep 2011 09:04:43 +0000

Hi,

sounds good.
But after having copied the way suggested and trying to reboot with “D” pressed it just boots normally (I tried several times). It boots normally, too, inserting the original SnowLeopard Install 1 DVD additionally.
Do you have an idea what the reason might be ?

Regards
Frank

(iMac late 2010, Lion 10.7.1

By: Joseph

Joseph — Mon, 29 Aug 2011 21:27:30 +0000

It may be me but my application install disks don’t work with Lion. So your miles may vary with this tip.

By: HoyMac | Get Apple Hardware Test Boot Mode Back on Some OS X Lion Macs

HoyMac | Get Apple Hardware Test Boot Mode Back on Some OS X Lion Macs — Mon, 29 Aug 2011 16:46:15 +0000

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By: AnonMac

AnonMac — Mon, 29 Aug 2011 16:34:23 +0000

Or, just install the CPU help files. I had the same problem when upgrading from Leopard to Snow Leopard on my MBP. This fixed it. Using the CPU help files fixed it.