Lesson 29. Startup, Shutdown, and Sleep Modes

Goals

• Understand the OS X startup process

• Identify the various stages of the OS X startup process

• Examine essential files and processes required to successfully start up

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 is often under 30 seconds. Obviously, users appreciate a quick startup, but most aren’t aware of what goes on during system startup because their Macs usually work properly.

This lesson focuses on the process that your Mac goes through from the moment you press the power button ...

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