Apple diagnostics tests your mac for hardware issues and suggests solutions. after isolating an issue on your mac to a possible hardware issue, you can use apple diagnostics to help determine which hardware component might be causing the issue.. The article states that newer macs will boot into apple diagnostics, whereas older macs will boot into apple hardware test. the end result allows tests for hardware failures on the mac, and both are accessed by holding down the “d” key on system start.. In this video, i show you how to run the apple hardware test. this test is for macs older than june of 2013. important: if your mac was released after june 2013, you will use apple diagnostics.
Using apple diagnostics. remember, ad is for mac models from 2013 and later; if your mac is an earlier model, you should follow the previously mentioned apple hardware test or aht over the internet.. Newer macs will run apple diagnostics, whereas older macs from 2013 and before will run the apple hardware test suite instead. aht typically displays a bit more information to the end user, while ad is a bit more restrained.. The look of the utilities will differ, since apple diagnostics is newer and aesthetically keeps the same design principals as those found in os x mavericks..
