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OS X Support Essentials 10.11 - Apple Pro Training Series: Supporting and Troubleshooting OS X El Capitan by Gordon Davisson, Kevin M. White

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Lesson 26Troubleshoot Startup and System Issues

GOALS

Understand the OS X startup process

Examine essential files and processes required to successfully start up

Learn about the various startup modes used by OS X

Troubleshoot the processes used at startup and login

System startup certainly isn’t the most glamorous part of OS X, but it’s clearly important and technically quite impressive. Apple has improved startup and runtime processes with every revision of OS X. When things work correctly, the startup process often takes under 30 seconds. Obviously, users appreciate a quick startup, but most aren’t aware of what goes on during system startup, because their Mac computers usually work properly.

However, when things do go wrong during ...

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