Home > Mac, OS X > Mac OS X Startup shortcut keys

Mac OS X Startup shortcut keys


Hold the ‘x’ key during startup:
This will force the Mac to boot from OS X, no matter which disk is specified as the startup disk.

Hold the ‘c’ key during startup:
To boot from a bootable DVD or CD.

Hold the ‘n’ key during startup:
To boot from a network computer that has a NetBoot volume.

Hold the ‘t’ key during startup:
To boot in FireWire Target Disk Mode. This mode let’s you use any Mac with a FireWire port as the source for your bootup system.

Hold the ‘d’ key during startup:
If the Apple Hardware Test DVD is in the optical drive, the Apple Hardware Test will begin.

Hold the ‘option’ key during startup:
The OS X startup manager will appear, allowing you to select a disk to boot from.

Hold the ‘shift’ key during startup:
This will boot your Mac in Safe Mode. Safe Mode disables login items and non-essential kernel extensions from starting up.

Hold ‘Command’ + ‘v’ during startup:
The command key is the key with the cloverleaf symbol. This shortcut will boot your Mac in Verbose Mode, with descriptive text sent to the display during the startup process.

Hold ‘Command’ + ‘s’ during startup:
This shortcut will boot your Mac in Single-User Mode, a special mode used for troubleshooting and repairing complex hard drive issues.

Hold  down the mouse’s primary key during startup:
On a two or three button mouse, the primary key is usually the left button. This shortcut will eject a DVD or CD from the optical drive.

Hold ‘Command’ + ‘Option’ + ‘p’ + ‘r’ during startup:
This zaps the PRAM (Parameter RAM), an option that long-time Mac users will remember. Press and hold the key combination until you hear the second set of chimes. Zapping the PRAM returns it to it’s default configuration for display and video settings, time and date settings, speaker volume and DVD region settings.

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