Boot while holding the d key.
Mountain Lion should have installed AHT on your Recovery partition. If this does not invoke AHT try again by holding option d.
The latter will attempt to load an Internet based version of AHT. You must obviously be connected to a wireless network when you do that.
Using Apple Hardware Test
Neither reboot holding d or option + d does anything. The article indicates the internet based version only works for computers that shipped with lion.
and "Apple Hardware Test is included on the DVDs that are shipped with some Macintosh computers. If the copy on your hard drive becomes unavailable, use the DVDs to run Apple Hardware Test."
I previously read this article and tried all of this which is what lead me to call apple support to try and get my original software disks.
See if your firmware is up to date: http://support.apple.com/kb/HT1237
Some pre-Lion computers are eligible for a feature that conveys the ability to use the Internet version of AHT. The firmware update addresses that ability. The AHT link above explains:
"See Computers that can be upgraded to use Lion Internet Recovery for more information."
If that does not prove fruitful, the only way to re-install AHT is to use your original System Restore DVD. No standalone downloads exist.
So I spent about 20 mins on the phone with Apple Care while they tried to figure out what disks to send me based on my serial. I got a disk today and it doesn't have AHT on it /System/Library/CoreServices/ doesn't have a ".diagnostics" folder in it. It seems more like a Retail disk that says Not For Resale than an actual OEM system disk.
Back to not being able to run AHT. So frustrating Apple.
The 10.4.6+ OEM gray DVDs have on the label "Apple Hardware Test" and to use D on startup - it NEVER installed a package to the hard drive. At all. Ever.
The G5 came with it on CD.
Mac OS X Install Disc 1
To start up from Mac OS X, hold donw C key...
To use Apple Hardware Test, hold down the D key as the computer starts up.
OS version 10.4.7
Disc Version 1.0
27591-5860-A - hope that is right, I really would need magnifying glass to double check.
And they are 'gray' OEM label - so it is on the Installer Disc 1.
I think because it uses dual layer that takes something / someone else ? to access and mount/read the contents that D loads which is likely CD size.
There are links on the web for the Apple Service Diagnostic DVD that is more thorough, but none for AHT.
You can see why I think it should be there for anyone or anyone with ADC Dev account.
Yes, my original disks had it ...
Just to be clear: You no longer have them, and that's not what Apple sent?
Because that is absolutely, positively what you need. You need a disc similar in appearance to the MacBook disc you describe. It will have "AHT version xxxxx " printed on the disc itself, where xxxxx = a code such as 3A153. Your Mac Pro's code may be different than that.
See if you can get that message across to Apple.
This post may be helpful: Which version of AHT for 2009 Mac Pro??
Message was edited by: John Galt
Yes, I lost my original disks. My first call with Apple they said they couldn't send me OEM replacement disks. My second call with Apple I was on the phone 20 minutes while he tried to find the disks to send. I paid a small fee and ended up getting sent what appears to be a white label retail disk. See attached image.
Ah, but that is on the DVD, and does it get installed to hard disk even back in 10.4.7 days? That is what and where - on hard drive - And there never was mention of using AHT w.o DVD until 2008 at least.
I can't look right now but maybe later if I boot my Mac Pro.
That could be anything. White box. White label. Not retail. And they may have mastered and burned some - just not the original 2006 era disc.
The hatter wrote:
Ah, but that is on the DVD, and does it get installed to hard disk even back in 10.4.7 days?
I do not believe it did. It certainly was not on my Tiger era Macs - AHT exists only on the machine-specific DVDs.
If he can't make Apple understand, or if the discs are simply unavailable, the OP's only hope may be eBay.