(Sorry about the images, but normal screenshots are impossible in startup modes)Īpple uses this diagnostic tool to determine if anything is wrong with the hardware in your Mac. In addition, there are links for Run offline and I agree. At this point, a screen titled “Run Diagnostics” appears (see image below), displaying a barcode with your Mac serial number, a Restart button, and a Shutdown button. Press and hold Command ( ⌘ ) – D until the Mac restarts and the Diagnostics Loader menu appears in the menu bar.Ī list of languages appears – highlight the language you need, then click the blue OK button. There are also icons for the internal and external drives. When the Startup Options screen fully loads, you’ll see a “gear” icon with the label Options beneath it. Keep holding the power button until the display shows Loading Startup Options. Shut down your Mac, then press the power button to start it up again. Is that shiny new M1 Mac acting flaky? To check the hardware to see if you’re having any issues, diagnostics mode is very useful. In this post I’ll list those modes for the M1 Macs, what they’re used for, and how to access them. Safe Mode is just one of many Mac startup modes. Recently, Dennis Sellers published a great article on How to Start Your M1 Mac in Safe Mode.
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