For most users, starting and shutting down your Mac is fairly routine: press the Power-On button to start, and go to →Shut Down to turn off the machine at night. But there are times when you need to do more, for whatever reason. Table 1-1 lists some of the additional keys you can use when starting, restarting, logging out, and shutting down your system.
Some of the keyboard shortcuts listed in Table 1-1 work only on newer hardware. If you are using an older Mac, these keyboard shortcuts might not work.
Table 1-1. Keyboard shortcuts to start, restart, log out, and shut down
Key command |
Description |
---|---|
C |
Holding down the C key at startup boots from a CD (useful when installing or upgrading the system software). |
N |
Attempts to start up from a NetBoot server. |
R |
Resets the display for a PowerBook. |
T |
Holding down the T key at startup places your Mac into Target Mode as a mountable FireWire drive. After starting up, your screen will have a blue background with a floating yellow FireWire symbol. Target mode makes the hard drive(s) of your Mac appear as mounted FireWire drives when connected to another system. To exit Target mode, press the Power-On button to turn off your Mac. After your Mac has shut down completely, press the Power-on button again to restart normally. |
X |
Holding down the X key at startup forces the machine to boot into Mac OS X, even if Mac OS 9 is specified as the default startup disk. |
Boots into single-user mode. | |
Boots into verbose mode, displaying all the startup messages onscreen. (Linux users will be familiar with this.) | |
Shift |
Holding down the Shift key at startup invokes Safe Boot mode, turning off any unnecessary kernel extensions (kexts) and ignoring anything you’ve set in the Accounts→Login Options preferences pane. |
Option |
Holding down the Option key at startup opens the Startup Manager, which allows you to select which OS to boot into. |
Mouse button |
Holding down the mouse button at startup ejects any disk (CD, DVD, or other removable media) that might still be in the drive. |
Logs you off without prompting you first. | |
Option-Power-On |
Shuts down your system without prompting you first. |
Restarts your machine without prompting you first. | |
Forces an automatic shutdown of your system; this should be used only as a last resort, because it could mess up your filesystem.[a] | |
Control-Eject (F12) |
Opens a dialog box that contains options for Restart, Sleep, and Shutdown. |
Once you’ve successfully logged in to your user account, you are presented with the famed Macintosh Desktop. It’s here where your Mac experience begins.
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