Press Command+R as your Mac boots to access Recovery Mode. RELATED: How to Wipe Your Mac and Reinstall macOS from Scratch From here, you can reinstall macOS, restore your computer from a Time Machine backup, or use the Disk Utility to repair, wipe, and partition your Mac’s internal disks. Recovery Mode provides various graphical tools for working with your Mac. Get Other Tools (or Reinstall macOS) with Recovery Mode If everything goes properly, your Mac will boot to its normal desktop. You’ll see the terminal messages appear during the startup process. Press Command+V as your Mac boots to enter verbose mode. It’s like Safe Mode on Windows-it won’t load third-party hardware drivers or startup programs, so you can use this mode to fix problems if your Mac isn’t working or booting properly. When you boot in Safe Mode, your Mac will check its startup volume, only load necessary kernel extensions, and disable third-party fonts and startup options. Macs offer a Safe Mode, also known as Safe Boot. Select your language and your Mac will automatically test its hardware and inform you if anything is wrong. To access this tool, press and hold the D key while booting your Mac. On Macs released before June 2013, Apple Hardware Test (AHT) will appear instead of Apple Diagnostics. Test Your Hardware with Apple DiagnosticsĪpple Diagnostics tests your Mac’s hardware to ensure it’s working properly. To boot directly from the network with Netbook, press and hold N instead. To skip the Startup Manager and boot straight from a removable device-for example, a CD, DVD, or USB drive-instead of its internal drive, press and hold C.
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