How to run apple hardware test with no cdrom?

My MacBook Air won't recognise old or new hard drive and I believe I may have a logic board issue. My external CDROM has also just stopped working due to the wire being split some. I have two questions, can I get a replacement wire for the CDROM and can I run Mac hardware test on my 2008 MacBook Air without a CDROM? I still have the original CD1. I am currently booting the mac from a Lion installation on an external HDD attached to the USB port.
If the answer to those is no, where can I sell this stuff for scrap?
Thanks

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  • MacMini 2010 4,1 how to run Apple Hardware Test from  /System/Library/CoreServices/.diagnostics folder

    I have a 2010 Mac Mini4,1 with SnowLeapard and plan to upgrade to Mavericks, but can't run Apple Hardware Test from my applications disk 2 that came with the machine.  For some reason the Mac can read it and kicks it our after about a minute.  Seems to be able to reado other disks, so this one may be corrupted. I found info on this community that says that the AHT is on the hard disk and I found it here /System/Library/CoreServices/.diagnostics using terminal.  When open that folder using terminal it open a window with that folders contents.  My problem is I can execute the only unix executable in that  folder.  It responds with "No application knows how to open /System/Library/CoreServices/.diagnostics/diags.efi"
    Can someone help me out here or if there is downloadable somewhere on line that I can get?

    My 2010 4,1 Mac Mini still has the HW Test on the Internal HD after updating it to Lion, Mountain Lion and Mavericks.
    see > Using Apple Hardware Test
    Additionally if your using a wireless keyboard and it is not invoking the Hardware Test using the D key immediately after the chine, then you may need to use a USB keyboard. Adding that any Apple, PC or generic Logitech USB keyboard should work for invoking the startup commands. 

  • How to burn Apple Hardware Test with 10.7 bought on the App store

    Hi Community,
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    We would like to run Apple Hardware Test on the install DVD but as mentioned he bought it from the App store.
    The only file we get is an installer (4.2 GB) but it is not a start up disk.
    Has anyone an idea of what could be done ?
    Thanks in advance for your help.
    Denis

    Apple Hardware Test can be invoked on Lion installations by holding D while starting from the internal HD. If that does not work try Option D as that will attempt to load an Internet version of AHT.
    I do not know of a way to burn AHT alone to DVD, but the disc that originally shipped with his Mac Pro will have AHT on it. Booting from that disc while holding the D key will load the disc's version.

  • IMac intel late 2006, lost DVDs, how to run apple hardware test

    Hello, Applers,
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    You can purchase replacements from AppleCare:
    Apple Store Customer Service at 1-800-676-2775 or visit online Help for more information.
    To contact product and tech support visit online support site.
    There is no way to run the AHT without the discs.
    If it works OK in safe mode then you might think about:
    Resetting your Mac's PRAM and NVRAM
    Intel-based Macs: Resetting the System Management Controller (SMC)
    Reinstall Snow Leopard:
    Reinstall OS X without erasing the drive
    Do the following:
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    Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
    2. Reinstall Snow Leopard
    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
    Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.

  • How to run Apple Hardware Test on Mac Pro with ML preinstalled?

    I have Mac Pro 5.1 (2012) which came with Mountain Lion preinstalled. It didn't have install DVDs. How do I run AHD? Restarting with D, or command+D, or option+D didn't work. It would just restart the OS. And Mac Pro didn't support Internet AHD eather.

    Thank you for your reply, Carolyn.
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  • How do I run Apple Hardware Test on a 2012 MacBook Air with 10.8.4?

    Hello everyone,
    I am trying to run Apple Hardware Test on a mid-2012 MacBook Air with 10.8.4 installed. Whenever I restart and hold the letter D my computer goes into internet recovery mode and asks me to connect to Wifi... Please help, thanks!

    Using Apple Hardware Test on computers with OS X 10.7 or later
    Mac NoteBook and Desktop computers shipping with OS X 10.7 or later have a partition on the hard drive or flash storage that contains AHT. To start AHT on these computers please follow these instructions:
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    When the process is complete, select your language and click the right arrow. If you aren't using a mouse, you can use the up and down arrows to select a language and then press the Return key.
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    To perform a more thorough diagnostic test, select the "Perform extended testing" checkbox under the Test button before you click the Test button.
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    Some Macintosh computers that shipped with OS X Lion and later 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.  An Internet-enabled connection via Ethernet or Wi-Fi is required to use this feature. Internet-based AHT functions the same as AHT on the hard drive or flash storage outlined above.
    The Mac NoteBook and Desktop computers listed in Computers that can be upgraded to use OS X Internet Recovery will require a firmware in order to support the Internet version of AHT. Without this update you may see the behavior discussed in this article.
    http://support.apple.com/kb/HT1509

  • How to run the Hardware test on a Mac mini 2015 ?

    how to run the Hardware test on a Mac mini 2015 ?

    Welcome to Apple Support Communities
    New Macs come with Apple Diagnostics instead of Apple Hardware Test, but their purpose is the same: check that your Mac's hardware is working properly. See -> https://support.apple.com/kb/PH18765?locale=en_US
    To run it, you only have to hold down the D key while your Mac is starting up, and follow the steps.

  • Running Apple Hardware Test from a cloned drive partition

    So I remember someone suggested perhaps running Apple Hardware Test from a hard drive partition, in order to speed things up.
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    I know for standard Apple Hardware Test I'm supposed to hold down D while it starts up with Install Disk 1 inside. I tried this after selecting the hard drive, but got nothing. Any suggestions how to proceed?

    Douglas McLaughlin wrote:
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  • Error Code After Running Apple Hardware Test

    I ran apple hardware test (I'm having problems where my computer freezes for like 10 seconds with the mouse being movable... but it happens very frequently. like once a minute. it's SOOO ANNOYING)
    this is the error i got after running apple hardware test:
    (it came out as a Mass Storage error... which is Hard Disk i guess)
    **ERROR*CODE***ERROR*CODE**
    2STF/8/3: S-ATA Bus 0-Master
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    I know about this: http://www.apple.com/support/imac/repairextensionprogram/
    I might go to the apple store, but I dont wanna make a trip out there for nothing.
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    Actually, i just spent like 1 hr working with disk utility using the os x install disk and i think it finally worked. im so happy for myself! yay... i wouldnt accept no for an answer. Disk utility kept saying "oh first aid failed because it didnt exit right" or something... total garbage response... i kept pressing verify disk and then repair disk and then i did the verify permissions and repair permissions too... didnt really know what i was doing with the permissions... but it finally worked so thats all that mattered! yay... its back to normal!!

  • Running Apple Hardware test from DVDs

    Hi,
    I am trying to run Apple Hardware Test, following the instructions at this site.
    Restarted the machine  with the letter D pressed, disconnected external devices, except mouse-keyboard and my  (2) screens.
    I disconnected i-lok dongle from PT HD/digidesign at an usb port  and connections to the  external audio intefcaes .
    There are 2 pci-e cards inside this 1,1 MAc Pro.
    I know It is a bit weird to ask this ( I used to do this with a G4 and a G3), but I only see the disc open with all the installation content and no AHT icon or utility.
    I tried DVD1, 2 of 10.4, 10.5 and 10.6.
    Thanks

    Sure, that is the first disc I inspected.
    Thanks!
    10.4.x
    I press D but the test does not start. Laso,  I did not find the AHT icon at the disc.
    I see the MAc Os installers, miscelaneous...
    I might be doing something wrong.
    BTW... I also love cats. There is one right here by my side. I will post a pic soon!

  • Running Apple Hardware Test... without ability to see the screen

    Here's a nice conundrum- my screen isn't working. I want to run Apple Hardware Test, but since I can't see it... no dice.
    I'm pretty sure this is the NVidia 8600GT problem- Apple has acknowledged that these graphics cards are defective. http://support.apple.com/kb/TS2377
    The only way I can get into the computer is to use screen share- I've tried an external monitor, and it doesn't work. And I can't screen share when the apple hardware test is running- any idea how to see this? Another option- is there anyway I could start it without seeing anything, and then look at the results later? Are the results saved in Console or anywhere?
    Thanks1

    I dont think you need to do a hardware test.
    Its the 8600 video cards, thats why Apple extended the warranty on the cards. Just bring it to the Genius Bar and they will sort it out for you.

  • HT201257 I have a slow boot up, so I wanted to run Apple Hardware Test. AHT never starts

    I have a slow boot up, so I wanted to run Apple Hardware Test.
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    Hi Titan,
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    However, the initial gery screen at startup still take more than two minutes after with the apple icon appears.
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  • How to access Apple Hardware Test?

    I just installed a fresh copy of Lion over Snow Leopard hoping that I woul be able to use the AHT but it just starts up like normal when I hold the D key... I've tried it a billion times. Anyway I can put the AHT on my iMac? It's an A1224.    

    When you upgrade OS X or you erase the hard drive, Apple Hardware Test stops being saved on the hard drive. If you want to run Apple Hardware Test, you have to insert the Mac OS X disc which came with your computer and start the computer holding the D key. Read > http://support.apple.com/kb/ht1509

  • How to start Apple Hardware Test under OS X Lion

    Since I made the upgrade to OS X Lion I cannot start Apple Hardware Test with the old method that works under Snow Leopard.
    Under OS X 10.6.8 I used to keep D key pressed until a picture appeared in the middle of the screen. With Lion it doesn't work, even under Wi-Fi internet connection.
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    Have a look at this discussion https://discussions.apple.com/message/15772841#15772841
    Stefan

  • Cant run apple hardware test

    I have a G5 20" iMac, intel based. I've been trying to perform a Apple Hardware test but am unable to get it started.
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    Thanks. Yes, I have a late 2007 20" imac. The model I have is a 2 GHz Intel Core 2 Duo, with 2 GB 667 MHz DDR2 SDRAM of Memory. I have a 320 GB Hard drive. The disks that came with the computer when I bought it in 2009 from Apple (3 of them) say iMac G5. I have 2 G5 Mac OS X install disks and a G5 Add'l Software and Apple Hardware Test Disk.
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    When I tuen on my computer I follow the instructions to the letter (from the link you gave me, I already had that and have tried it a few times) and it still will not start the test.
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    I susspect I need additional Ram installed, but do not know how to check my computer to find out.
    Lastly, the computer will only work for about 5 - 15 minutes normally after logging on. After this time the rainbow beach ball comes back and even the simplest of task can't be performed with a wait for the beach ball to stop and go away...
    I'm stuck and don't know how to proceed...
    I have $0 money left to invest in a certified Apple technician to come to the house to fix the problem...
    Help....
    Thanks,
    Brian

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