Booting a Mac in Safe Mode: Guide – Guide
Troubleshooting on a Mac is different from troubleshooting on a PC, but not so different. Here it is how to use your Mac’s built-in boot options to test your hardware, boot in safe mode, reinstall macOS, and perform other system tasks. To access any of these tools, you must first shut down or restart your Mac. Then, you must hold down the appropriate key or key combination before the gray startup screen appears. Press the keys immediately after playing the startup sound.
What is safe mode
Safe Mode or Safe Boot is a diagnostic mode for macOS designed to fix various problems on your Mac. Enabling Safe Mode allows you to solve any problem that prevents the operating system from functioning normally. It helps you discover the problem based on how your computer reacts to the Safe Mode environment. While in this mode, the Mac will start without loading additional third-party programs. Thus, you can test whether it is the entire system or a specific program that is causing problems. This means that only a minimum number of preferences, system extensions and fonts that need to be executed will be started up with your computer so that you can isolate problems and resolve problems accordingly. Safe mode can get your computer up and running it all over again whenever problems arise from corrupted data or applications, damaged fonts and preference files, or software installation problems. You can use it to solve any problems that prevent your Mac from starting up or problems with the startup disk, including applications that do not start or cause your computer to freeze, freeze, or shut down.
What happens when your Mac is in safe mode
Several things happen when you start your Mac in Safe Mode. Specifically, it does the following:
How to Start your Mac in safe mode
To start-up in Safe Mode, follow the steps below:
How to Tell if your Mac is in safe mode
You can find out if your Mac is in Safe Mode using the System Information application. The System Information application (also known as System Profiler on some versions of OS X) shows a summary of information about the software, hardware, network and other information on the Mac.
What to do when your Mac won’t turn on or start up in safe mode
Here are a few things to check when your Mac won’t turn on or on, but doesn’t complete the boot process: If you still need further assistance, contact Apple Support or visit an authorized Apple Store or Service Provider. If you don’t have a keyboard or can’t use the keyboard’s Shift key to start in safe mode, you can configure your Mac to start in safe mode if you have remote access to your Mac. To do this: Alternatively, start in verbose mode using the command: sudo nvram boot-args = ”- x –v” sudo nvram boot-args = ””
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