![]() When it's done, you see a notice with error Reference codes that describe the likely problem. Especially useful are the keyboard shortcuts that are available.Īfter booting, you'll see a black screen with a progress bar when the Apple Diagnostics start. You should review this Apple Diagnistics page and even print it so you have a handy reference during the testing. Note that if you leave the Ethernet cable plugged in and boot with OPTION + D, you can do some extra things, such as access your support and service options and contact Apple support. Hold down just the D key right after you hear the startup chime. Note that there is no prefix key used here. The Apple Diagnostics has detailed steps on how to shut down your Mac, which peripherals to disconnect, and how to hold down the D key at boot. If your Mac is from 2012 or earlier and has OS X v10.8.4 or earlier, use the system software disc or USB flash drive that came with your Mac.įor this how-to, I'll discuss Macs introduced in June 2013 or later and the Apple Diagnostics.If your Mac is from 2012 or earlier and has OS X v10.8.4 or later, use Apple Hardware Test, which is built into your Mac.If your Mac is from 2013 or later, use Apple Diagnostics, which is built into your Mac.The first applicable document here is Apple support doc #PH18765. (If the introduction date for the product isn't specified, you can use a great app called Mactracker to convert a model number to an introduction date.) One way to do this is to use Apple Menu > About This Mac. The first step is to determine the OS version and year your Mac was introduced. This article is restricted to the case where you suspect something is wrong with the very Mac itself. It could be a corrupted or failing boot hard disk or SSD, a flaky peripheral or a damaged or conflicted OS X. There a many ways a problem can crop up on your Mac. The technology has changed over the years, and the procedure is determined by how old your Mac is. Modern Macs have a built-in diagnostic test that can be used to help troubleshoot a hardware problem. ![]() Navigate to the General - Current Models section of the App to see specs of Apple products that are currently being sold on on. One of my favorite features of this app is that it gives you a one stop shop to compare and look at the products of Apples current offering. Once you have the model of the device or you know the model of the device, navigate to Mactracker - either on your macOS or iOS device and find the Apple product that you would like to get more information about.įrom here you will be presented to plethora of info. That will give you the model of the device. So if the device is in front of you and you are able to get the serial number, I’d recommend to plug that serial number into. How about just to see what year the device in question was released, will Apple still support it, or will it install the latest software update that Apple is promoting? You can also do that. Let's just say you need to reference a MacBook Pro from 2013 to see if the device has a built in HDMI port, you can do that. Mactracker, in my opinion, one of the greatest free tools for an Apple IT Professional out there. Continuing from my "Is Your Device Under Warranty" post, here's an App that I regularly use in my day to day that will help you identify specifics about any Apple product you own.
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