Archive for February 11th, 2014

by Tom Nelson

The Apple Hardware Test (AHT) is a special bootable diagnostic tool that can test a Mac’s hardware. AHT has been included with Macs since well before the Intel Macs made an appearance.

AHT was originally distributed on CDs, then DVDs, and finally on USB flash drives, for Macs, such as the MacBook Air, that don’t have an optical drive.

But with the advent of OS X Lion, and the Mac OS now only available as a download from the Mac App Store, a new way of acquiring and using the Apple Hardware Test was needed. To ensure that there’s still a way to access the Apple Hardware Test, Apple created an Internet version that makes use of the Mac’s ability to boot from a network device. Of course in this case, the network needs to be connected to the Internet, and the host you boot from is located on Apple servers in the various Apple data centers.

Read more on About: Macs.

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