![]() Beyond the web, his work has appeared in the print edition of The New York Times (September 9, 2019) and in PCWorld's print magazines, specifically in the August 2013 and July 2013 editions, where his story was on the cover. With over a decade of writing experience in the field of technology, Chris has written for a variety of publications including The New York Times, Reader's Digest, IDG's PCWorld, Digital Trends, and MakeUseOf. Chris has personally written over 2,000 articles that have been read more than one billion times-and that's just here at How-To Geek. You can also launch Apple Diagnostics from the internet by holding Option+D at startup, which is handy if you can't get online.Ĭhris Hoffman is the former Editor-in-Chief of How-To Geek. Run Apple Diagnostics to check your Mac for known issues, then cross-reference any error codes you get with Apple Support. This includes USB drives that are plugged in while your computer starts up, Windows partitions created with Boot Camp, or additional macOS installs that are stored on external drives. If you want to boot from a different partition or volume then hold Option while your Mac boots to see a list of eligible boot disks. This allows you to do things like reinstall macOS, access Disk Utility to attempt to repair any drives, execute commands using the Terminal, or restore from a Time Machine backup. To access Recovery Mode, press and hold Command+R while your Mac boots. Some older Mac models may notice that some things like accelerated graphics, wireless networking, sharing, and more won't work while in Safe Mode. ![]() Assuming this volume is labeled "Macintosh HD" you can get there by typing: You'll find your drive under the "Volumes" directory. You can now perform similar operations on your startup drive using the command line as you could in good old single-user mode. Now quit Disk Utility and choose Terminal from the Utilities drop-down menu. Use the "Mount" button and enter your password if prompted. If it's not, launch Disk Utility and click on your startup volume (probably "Macintosh HD"). When you log in to an admin account on Recovery Mode startup, your main startup disk should be mounted. Though Apple Silicon doesn't have anything quite the same, you can access everything through Terminal in Recovery Mode. Single-user mode is a mode on Intel-based Macs that loads only the bare minimum services and extensions and dumps you in front of a command line. You can then choose whether to repeat the rest, restart, or shut down your Mac. The Mac WILL restart when I forcibly cut power to it.The troubleshooter will run and may give you a reference code to check on Apple's website for more information.Tests on other (older) Mac mini models have been successful, but both 2018 3.6 i3 Mac Minis running Mojave 10.14.6 are not consistently starting up once you supply power. Please note I do NOT have a UPS connected to the system. remove power once the power light goes out, but before the 5 minute timeout.Īctual result: Mac remains in powered-off state.execute the dirty shutdown from the command line.Enabled "Start automatically after a power failure" option in Energy Saver prefs.My plan was to use the "dirty" shutdown from the command line to simulate a UPS shutdown: sudo shutdown -hu now. This 2018 Mac mini running Mojave is intended to run as a kiosk, but a daily sleep/wake cycle is proving problematic with some USB devices.
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