Apple Hardware Test (AHT) is GONE!! after Lion install

After installing Lion on my new early 2011 MBP the AHT is gone...
Pressing "D" will not load the AHT (it was installed and working fine in my MBP prior to Lion).
I called the APP hotline to inquire about it and the technician couldn't boot into the AHT on all the macs with Lion available to him.
(a report has been filed with the engineering team)
According to the newly updated KB: http://support.apple.com/kb/ht1509
QUOTE: "Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet."
After pressing and holding the "D" key the Mac just loads into the desktop... There is no online AHT or pre-installed AHT available...
>> Is anybody else having this problem?? <<
If you are having the same problem maybe you should also report it to Apple: http://www.apple.com/feedback/ or the APP hotline...

HOW TO FIX THE AHT PROBLEM IN LION:
Just to clarify what Francisco was saying in Spanish:
> The original AHT that came preinstalled in the MacBook Pro (and maybe all other Macs) is found in disk #2.
> Originally I thought the AHT had a different partition on the HD but it ends up being an extension of the OS.
> This is not installed in OS X Lion, If you used the USB key or download it from the App Store, the AHT will not be included.
> So, to install it back in, you can either run the install from the DVD (just make sure you don't install iLife again and other files which you may not need)
OR
For Road Warriors
Since installing the bundled package will also install other Snow Leopard files; You might want to try this:
> Download Pacifist ( http://www.charlessoft.com/ )
> Drill down the CPUHelpFiles install package and only install the CPU_AHT package.
By the way, there is no way of undoing this, unless you want to reinstall Lion from the recovery partition.
> Restart your mac
> Everything should be A+ ok
> To test what you just installed restart the mac and hold down the "D" key before the screen turns white/gray. After a few seconds you should see the AHT loading screen:
Done! there is no need to have that DVD with you when you travel...

Similar Messages

COOL FEATURE - Apple Hardware Test (AHT) built-in. No disc needed!

It's a MacBook Late 2007... it would be interesting to see what other models have this feature.
Start the Mac
hold the D key
do NOT put in your installer disc
it starts up Apple Hardware Test (AHT) in like 5 seconds. No disc needed. VERY COOL
(unfortunately, it seems to have been disabled after I did the Keyboard Firmware Update)

Some G5s had a firmware update that caused problems with the version of Apple Hardware Test that shipped with the G5. The Latest G5 Apple Hardware Test is 2.2.5
Call Apple and see if you can get it.
Another hardware test is TechTool Pro
<http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=48>
Meanwhile, try testing with some of the RAM removed. Try different combinations of RAM modules and slots. Always use them in pairs.

Apple Hardware Test AHT

Hi,
I would like to run the Apple Hardware Test (AHT) on my MacPro(2,1) and since I have upgraded from Panther through Leopard to Snow Leopard, I have misplaced the original installation disks that came with my Mac Pro. Is there anyway to run AHT without those original install disks? Is there somewhere to download the images that I need?
TIA .... Jon

You will have to call AppleCare and arrange to purchase replacements. There are no alternative sources for the AHT for your Mac Pro.

Apple Hardware Test (AHT), buzzing noise, fan blows loud, & AHT crashes

Hi there,
I've finally had it with some hardware issues that I've had since day 1 of owning this G5 Dual 1.8.
Running10.4.9 OSX...
Nothing that has affected my day to day working-yet, but growing problems, fans get loud, awful buzzing noise from inside the tower comes and goes and grows in volume when it's happening. I believe it's coming from the internal drive bays... Both of which are filled with 2 new SATA Seagate internals that don't appear to be slowing up or spinning a processing error when I'm working...
When I run an Apple Hardware Test, The AHT disc crashes each time at the 5 minute and :12 second mark while "In Progress" on the "Mass Storage" test, it freezes and the fan gets loud. I do a hard restart to get up and running ok each time afterwards.
I've never received a complete AHT result of tests summary, ever, so I don't know what's really wrong, ever. But I know something is not right. Using Disk Utility is a joke, SMART status is always "verified" of course, no obvious system software errors.
I'm using the disc that came with my G5 "Additional Software Apple Hardware Test":
AHT Version 2.2.2
Disc Version: 1.1
I've scoured Apple knowledge base for anything on this version-but nothing.
Any suggestions please. IS there any hardware testing software out there besides the faulty AHT disc software Apple provides? The nearest Apple store is over an hour and half away, I just don't have time to drive there to hear the same thing I already know, and if I could pinpoint the problem myself with proper software, I can handle doing the maintenance....
Please help!
Thanks!
DAve

Some G5s had a firmware update that caused problems with the version of Apple Hardware Test that shipped with the G5. The Latest G5 Apple Hardware Test is 2.2.5
Call Apple and see if you can get it.
Another hardware test is TechTool Pro
<http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=48>
Meanwhile, try testing with some of the RAM removed. Try different combinations of RAM modules and slots. Always use them in pairs.

Yet another pointless question about the practically non-existent iMac G5 Apple Hardware Test (AHT) disk.

I have a 17" iMac G5 (iSight model) also known as model A1144, PowerMac12,1 or MA063LL/A.
Where do I download the Apple Hardware Test (AHT) disk for this machine? Apparently nowhere. However, it would really help me on my quest if I knew what I was looking for.
Does anyone know what AHT version is compatable with my machine? 2.2.1? 2.3.1?
How about the part number on the disk? I have some Intel disks that say 2Z691-5734-A that (obviously) won't work.
Is the AHT on Disk 1 or Disk 2? I'm starting to think there never was an AHT for this model.
Where do I get those ASD disks the so called "geniuses" have?

Disk 1: 2Z691-53179-A
Disk 2: 2Z691-5493-A
Compatible with eMac (2005), iBook G4 (Late 2004), iBook G4 (Mid 2005), iMac G5 17-inch (ALS), iMac G5 20-inch (ALS), iMac G5 (17-inch iSight), iMac G5 (20-inch iSight), iMac (Early 2006 17-inch), iMac (Early 2006 20-inch), Mac mini, Mac mini (Late 2005), Mac mini (Early 2006), MacBook Pro, Power Mac G5 (Early 2005), Power Mac G5 (Late 2005), PowerBook G4 (15-inch Double-Layer SD), PowerBook G4 (17-inch Double-Layer SD)
http://www.welovemacs.com/2z69153179a.html
AHT I think was on a seperate CD.
Thanks Kappy, if v2.2.1 then search for...
018-1680-A.dmg

Apple Hardware Test (AHT) invoked at startup with 'ALT-D' not 'D'

Although several reasonnaably reliable sources (including such page as http://support.apple.com/kb/HT1533 ) mention that pressing 'D' at startup will invoke the Apple Hardware Test startup option, at leats on my Macbook Pro 2011 with OSX Lion, EFI 2.8 it is really 'ALT-D' that invokes AHT not 'D'. Pressing the 'D' at startup simply seems to hangs bootup until I release the key.

OS X Lion- About OS X Recovery
OS X (Lion/Mountain Lion)- About OS X Recovery
Computers that can be upgraded to use Lion Internet Recovery
The above documents what keyboard shortcuts are used to invoke AHT and some added functions in Lion and/or Mountain Lion.

Apple Hardware Test (AHT) Hard Drive Full Read Fail But SMART Status OK

I have a Mac mini Server from Mid 2010 running Snow Leopard Server.
Ocassionally, it'll freeze up with the spinning beachball wheel for a few minutes. This usually happens when opening an app or performing an app function from the menu bar. It's a pretty clean system—there are not many apps installed.
I suspect it's a hadrware issue. I ran Disk Utility's Permission and Disk Repair. All good. SMART Status is verified. So I ran the Apple Hardware Test. Everything passes except for the Hard Drive's "Full Read"—it fails because "Reading took longer than the average time". The Hard Drive "Short .. test" and "Check SMART Status" pass.
Does anyone have an idea of what's going on here? Is the hard drive the issue? I don't understand how there can be a read issue (or hard drive issue), when the SMART Status is verfied.

S.M.A.R.T isn't perfect. Neither is AHT for that matter, but if it is reporting that reading is taking longer than it should then an impending failure is likely. The occasional "wait cursor" appearance supports that diagnosis.
Consider yourself fortunate in that you still have the ability to back up anything important, and you can plan a convenient time for its replacement.

What version on Apple Hardware Test (AHT) does my iMac support?

When I start up my iMac holding the "D" key, it gives me this message: "Apple Service Diagnostic does not support this machine (iMac8,1/Mac-F226BEC8)"
I'm guessing the shop I took it to last year who reinstalled Snow Leopard used the wrong disc or something??? Anyhow, I need to find the disk with my correct version of ASD. My iMac is an A1224 EMC 2133. Thank you.

Look here:
http://support.apple.com/kb/TS4154
EDIT:
Ooops! That refers to Lion!
The hardware test for Snow Leopard is on Disk 2 of your original install disks.
http://support.apple.com/kb/HT1509
Message was edited by: Klaus1

Run the Apple Hardware Test (AHT) from a external drive possible?

Hi my DVD drive is dead and i need to do a hardware test now but my macbook pro spits the dvds out., does anyone have experience with running AHT from external drive ?

macjack wrote:
What are you using AHT for specifically? Could you instead use a utility like Rember for checking RAM, which does a better job IMO than AHT?
-mj
i got it back from a authorized apple center that replaced the logic board and video card but now my dvd drive does not work and i can not test it with the original dvds, it was a recall on apples part for a faulty video card.
i want to test the v card as well as anything else i can do to see if someone snatched the original dvd drive becuase this thing was working before i took it there

Apple hardware test (AHT) preinstalled on latest macs

hello,
it seems that apple ships it's latest mac models, with AHT preinstalled - i.e. if you hold down the 'D' key on startup a new mac boots into AHT even without any CD present.
according to another thread (which i unfortunately lost the link to) it is installed in the following hidden direcotry:
/System/Library/CoreServices/.diagnostics
which contains a whole lot of things.
this is obviously very handy to have, however if you have to do a fresh install this directory does not get recreated, thus we are wondering about the following:
• with which models has apple started to do this;
• does the .diagnostics directory contain model specific information;
• how can we recreate this directory once lost, due to OS reinstallation;
any help appreciated.
ds.

thanks for your reply - that is exactly what i had hoped for.
now to the intriguing part, as described in your reference there is whole bunch of subfolders with seemingly similar content in /.diagnostics
after closer inspection, here is what i found...
.diagnostics AHT Version Model Identifier
? 3A130 ? MacPro3,1
? 3A131 ? MacBookAir1,1
? 3A135 ? MacBookPro4,1
Mac-F42D89C8 3A147 3.3.1 MacBook5,1
Mac-F42D86C8 3A148 3.3.2 MacBookPro5,2
Mac-F22C86C8 3A150 3.3.1 MacMini3,1
Mac-F42D88C8 3A151 3.3.1 MacBookAir2,1
? 3A153 ? MacPro4,1
Mac-F2218EC8 3A156 3.3.1 iMac9,1
Mac-F2218FC8 3A157 3.3.1 iMac9,1
? 3A158 ? MacBookPro5,1
? 3A160 ? MacBookPro5,2
Mac-F22788AA 3A161 3.3.1 MacBook5,2
Mac-F42D89A9 3A162 3.3.1 ?
Mac-F42D86A9 3A163 3.3.1 MacBookPro5,1
? 3A165 MacBook5,2
Mac-F22587C8 3A171 3.3.1 MacBookPro6,2 MacBookPro5,3
Mac-F22587A1 3A172 3.3.1 MacBookPro5,4
Mac-F2268AC8 3A173 3.3.1 MacBookPro5,5
Mac-F2268EC8 3A175 3.3.1 MacBookPro6,1
? 3A176 ? iMac10,1
Mac-F2268DAE 3A178 3.3.2 ?
Mac-F22C8AC8 3A181 3.3.2 MacBook6,1
Mac-F2268DC8 3A188 3.3.1 ?
Mac-F2268CC8 3A189 3.3.1 ?
? 3A195 ? iMac11,2
? 3A199 ? MacBook7,1
? 3A202 ? iMac10,1 iMac11,1 iMac11,3
? 3A207 ? MacPro5,1
the above is collated with information from mactracker - strangely enough my imac i7 (late 2009, iMac11,1) does not seem to preinstalled with the AHT version it requires... although it works just fine!
anyway will try to reinstate from install disk later today and report back.
ds.

Error when booting from Apple Hardware Test (AHT) CD

Just downloaded AHT 1.2.6 from here for my 2nd-hand Power Mac.
Burned it to CD with Disk Utility on my iBook, booted from it on the Power Mac, and received the following message after the "loading..." splash screen:
invalid memory access at %SRR0: 00034870 %SRR1: 00003030
This left me at a command prompt, from which I chose to shut down the Mac.
My Mac version is PowerMac3,6 4.4.7f1. Is this error down to using an incorrect AHT CD, or something fundamentally wrong with my RAM? I did test my RAM after purchase with Rember and possibly also with Tech Tool Pro 4.5.3 - no errors reported then.
SiR G.
EDIT: The Power Mac now has its original graphics card installed, not the ATI Radeon 9800 Pro; however, it still has the Sonnet card in place as the boot disk runs from this.
Message was edited by: SiRGadaBout

Hi,
You have the same problem as I, but I also noticed your firmware is a little off. The absolute last firmware update should have given you: "4.4.8f2". Here, have a look at mine.
Machine Name: Power Mac G4
Machine Model: PowerMac3,6
CPU Type: PowerPC G4 (3.3)
Number Of CPUs: 2
CPU Speed: 1.25 GHz
L2 Cache (per CPU): 256 KB
L3 Cache (per CPU): 2 MB
Memory: 2 GB
Bus Speed: 167 MHz
Boot ROM Version: 4.4.8f2
Yeah, I get the same problem as well with the AHT CD, strange as it seems. I tried removing DDR chips one at a time to find the culprit. It seems that I have been unable to figure out why it goes to the open firmware command line and prints: invalid memory access at %SRR0:00034870 %SRR1: 00003030. I ran memtestosx with applejack and although it took hours for it to complete, it gave me fantastic reports of all my memory functioning normally. I do notice the following with my memory:
Size: 512 MB
Type: DDR SDRAM
Speed: PC2600U-25330
Status: OK
DIMM1/J22:
Size: 512 MB
Type: DDR SDRAM
Speed: PC2600U-30330
Status: OK
DIMM2/J23:
Size: 512 MB
Type: DDR SDRAM
Speed: PC2600U-30330
Status: OK
DIMM3/J20:
Size: 512 MB
Type: DDR SDRAM
Speed: PC2600U-30330
Status: OK
**NOTICE that one of my memory sticks is PC2600U-25330, and the rest are PC2600U-30330. Could it be that one of my memory sticks in PC3200 memory and all the rest are PC2700? Help!

How long should the Apple Hardware Test (AHT) run?

II'm running the AHT on a 2012 quad core i5 iMac 16gb/3TB .....the progress bar moved quickly to about 7/8 done, about 4 minutes, but now has been sitting there for 40 minutes.
can anyone provide experience or input as to how long I should expect it to sit there?
thanks

If you run AHT in extended mode it can take over an hour to run, one factor is the HD capacity.

Cannot start-up to the Apple Hardware Test — MacBook Pro & Lion

Whenever I try holding the D key before and throughout all of the start-up process, it simply makes the grey screen appear for longer, and slow the whole process... but never beings the Apple Hardware Test.
I'm following Apple's official instructions:
To start up your computer in Apple Hardware Test:
Press the power button to turn on your computer.
Press and hold the D key before the gray startup screen appears. An Internet-enabled connection via Ethernet or Wi-Fi is required to use this feature.
Note: Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT.
Why doesn't it work?
My MBP was shipped as follows:
For Apple computers that shipped with Mac OS X v10.5.5 to 10.6.7, Apple Hardware Test is located on the Applications Install Disc 2 and should be included with your computer.
But I have upgraded to Lion! Do I need the disk still? If so, why am I to lumber around a disk from a previous OS... good that I didn't throw it out!

I'm trying to find the answer to a similiar question. Here's my thread.
https://discussions.apple.com/thread/3549995

Error Codes after Apple Hardware Test...

After someone here told me I've been experiencing kernel panics, I did some digging on the x lab site and re-ran the Apple hardware test in loop mode. after 17 runs, it returned the error:
4MOT/2/40000005:Right Side
I can't seem to find a list of error codes anywhere. My MBP has two 1GB RAM chips, both were pre-installed when I got the machine from Apple. I haven't tried switching them to see if the same error is returned on testing or with ONLY one or the other installed to see if this is truly a RAM issue. I thought I'd post to the forum for ideas first...

I'm afraid I have no idea. If you have AppleCare, I would ask them about the error code. You do have a different error code (/2/ not /1/ and different number after the second slash) than the link, so perhaps it is not a fan motor that is your problem, though I'm hard-pressed to think of what other motors the MBP has (I don't think the hard drive is on the right side, for one.) Alternatively I can imagine, since you said it took you 17 tests to get the result, that this is an intermitent problem--for all I know, just a slightly loose/poorly soldered wire--and so istat hasn't detected the problem yet.
I think AppleCare or a Mac Genius is your best bet, if you have the one or can get to the other. In particular, unfortunately, Apple does not seem to publish the hardware error codes; it only makes them available to techs.
Good luck!

AHT Apple Hardware Test Download & Flash Drive

Hi guys,
I really need to test the hardware on a 13" MBP. Full spec below.
The machine has Yosemite installed & I don't have the original install disc.
Does anyone know where to download the Apple Hardware Test (AHT) files & how to go about using it with a flash drive and a restart?
I've read this can be done but have only found dead links on old websites.
Holding down 'D' or 'Alt+D' isn't working, which I believe is due to the new operating system not having AHT.
Thanks!
Macbook Pro Spec:
MacBook Pro "Core i7" 2.7 13" Early 2011

"Wanted to download this as I'm not sure I can put my hands on the original 10.3 install disc. "
You will need to find it as the AHT is on the *machine specific* System Install DVD 1. If you lost your System DVDs, you can get replacement System Install & Restore CD/DVDs from Apple's Customer Support - in the US, (800) 767-2775 - for a nominal S&H fee. You'll need to have the model and/or serial number of your Mac available.
!http://i45.tinypic.com/jl0z95.jpg!

Apple Hardware Test (AHT) is GONE!! after Lion install

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