![]() If there is an issue found, Apple Diagnostics suggests solutions as well as offers references codes, which you should note before proceeding. Keep doing it until a screen asking you to choose your language appears. Turn it one, and then immediately press and Hold the D key on the keyboard.Keep your Mac on a hard, flat, and stable surface that has proper ventilation.Disconnect all external devices except your mouse, keyboard, display, Ethernet connection, and AC power connection. ![]() Once you have isolated the issue as a possible hardware problem, you can follow these steps: Check for Hardware IssuesĪpple Diagnostics assists you testing your machine for hardware issues. Now, try to install the macOS update in safe mode. Leave in safe mode by restarting your Mac – no need to press any keys during startup.For those whose startup disk is encrypted with FileVault, the user might be asked to log in twice. Release the Shift key once you see the login window.At this point, the Apple logo should appear. Afterwards, immediately press and hold the Shift key. It can verify your startup disk and try to repair directory issues, as well as delete font cashes, kernel cache, and other system cache files.įollow these steps to start up in safe mode: Also known as safe boot, it’s a way of initiating your Mac in a way that certain checks are done and the software is barred from automatically loading or opening. It’s also worth trying the Safe Mode option to resolve the issue. Using the Update buttons, download and install any updates listed.Click Updates located in the App Store toolbar. ![]() You can also get updates for earlier macOS version such as High Sierra, Sierra, and El Capitan by following these steps: If your Mac is up to date according to Software Update, then that means all macOS apps are also up to date, including Safari, Books, iTunes, Messages, Calendar, Mail, FaceTime, and Photos. Choose More info to find out details about every update and select specific ones to install.
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