How do you run a hardware test

http://support.apple.com/kb/HT1509

What version of OS X did you Mac come with?

If it came with Lion or you wipe the drive to install Lion holding down just the "d" key may not take you to the internet AHT. If it doesn't then hold down both the Option and the d keys (Option+d).

Shootist007, greetings; For future reference, only the 'D' key has to held down and it seems it can only be initiated with one of the original gray discs (which is identified by the one with the instructions on it) and not a retail disk.

Ciao

OGELTHORPE wrote:

Shootist007, greetings; For future reference, only the 'D' key has to held down and it seems it can only be initiated with one of the original gray discs (which is identified by the one with the instructions on it) and not a retail disk.

Ciao

That is incorrect for newer systems. On my late model 2011 just the d key does nothing, computer boots to the hard drive as normal except it takes longer. Option+d takes you to the online Apple hardware test. As I posted above.

I do not post, or I try not to post, incorrect information.

Thanks.

Shootist007 greetings; As you know only some early 2011 MBP came with Snow Leopard installed and the vast majority came with Lion. All late 2011 MBPs have Lion installed. Thus the the procedure for running an AHT on them is correct as you have stated.

For all MBPs prior to Lion require holding only the 'D' key. Those instructions are found printed on the original install disks. I tried the Option-D combination that you mentioned and it resulted in a normal start up with the install disk recognized on the desk top. Holding the D key on start up did initiate the AHT.

Out of curiosity I tried the Snow Leopard disk in my old Tiger MBP and it resulted in a machine shutdown. Retail disks also do not work. I tried both Leopard and Snow Leopard retail disks in both MBPs.

Conclusion: An AHT test can only be performed by holding the 'D' key and using the original install disk that came with the MBP.

I have posted this information simply for accuracy, nothing more.

Ciao.

But that info is incorrect for newer Macs. As I stated in my first reply IF "d" does not work then try Option+d.

Not sure why you must constantly try to correct what I post when it is the correct information.

All other info is in the Apple KB article wjosten linked to. It is not for accuracy that you posted your first rebuttal to my post. In your post you basically said I lied and this is not the first time this has happen. I am getting very tired of it and wish you would stop this practice.

Please check your facts completey before posting.

Shootist007, greetings; You original post properly queried the OP as to what OS was in use. You covered the Lion scenario and my post addressed the prior OSs (Snow Leopard, Leopard, Tiger). My reference to gray installation disks by definition excludes Lion OS because it does not use that media. Perhaps I should have been explicit in that case. (Note the first paragraph of my 5:20 PM post where I agree with you.) Since you have a Lion MBP and I do not, and since I have MBPs with three prior systems and you do not, I chose to share that information with you and the OP.

Regarding the use of Option-D, it does not work on MBPs prior 2011. If it works for 2011 MBPs, then perhaps you have discovered a procedure that is not documented in any of the Apple support pages or Mac Help. Everywhere I have looked in Apple documentation, I have found no mention of an Option-D command in relation to an AHT. Since I do not have Lion I can not test for it and I have not challenged you on that point (nor have I questioned you veracity on this point).

As part of my fact checking, including the afore mentioned link by wjosten you might examine these:

http://support.apple.com/kb/TS4154

http://support.apple.com/kb/HT1883

http://support.apple.com/kb/TS4154

http://support.apple.com/kb/HT2644

An Option-D is not mentioned. If you have tried it and it does work, I have no reason not to believe you. Again I have not not stated anywhere that it will not work. I just cannot test for it.

Ciao.

Shootist007 wrote:

But that info is incorrect for newer Macs. As I stated in my first reply IF "d" does not work then try Option+d.

Not sure why you must constantly try to correct what I post when it is the correct information.

All other info is in the Apple KB article wjosten linked to. It is not for accuracy that you posted your first rebuttal to my post. In your post you basically said I lied and this is not the first time this has happen. I am getting very tired of it and wish you would stop this practice.

Please check your facts completey before posting.

You are correct - Late 2011 MacBook Pros that came with Lion pre installed (no media included) must use the Option+D method to access Apple Hardware Test. I have one. It did not come with install disks. Option+D is how I accessed AHT. Just did it. It worked.

I have posted this information for accuracy, nothing more 😁

please check out this

http://support.apple.com/kb/PH4510

Use Apple Hardware Test

1. Open the Help Viewer’s Action pop-up menu (looks like a gear) and choose Print to print these instructions.
2. Disconnect all external devices except the keyboard, mouse, display, and speakers. If you have an Ethernet cable or external DVD drive, disconnect them.
3. Restart your computer, holding down the “D” key while the computer restarts. After your computer restarts, you should see the Apple Hardware Test chooser screen. If you don’t, Apple Hardware Test may not be available on your computer. You may be able to start Apple Hardware Test from the Internet. Reconnect your computer to the network, and then restart your computer while holding down both the Option and “D” keys.
4. When the Apple Hardware Test chooser screen appears, select the language you want to use, and then press the Return key or click the right arrow button.
5. When the Apple Hardware Test main screen appears (after about 45 seconds), follow the onscreen instructions.

IS this the same test that they run when they test it at apple, using there ethernet?? please help me.

brenda69 wrote:

How do you run a hardware test?
iPhone 4S, iOS 5.1

So I think its about iOS, not about OS X.

I belive apples ethernet is only capable of running the test i could be wrong. but Theres A link onhttp://support.apple.com/kb/HT1533 Start up commands.