FIX COMMON OS X ANNOYANCES

Every release of OS X has its share of annoyances, but a number of the most common problems with OS X can be fixed with a Terminal command or two. -Disable the Startup Chime You Mac likes to drop a loud tone when you boot up that's meant to tell you that everything is working. That start-up chime is fine for most people, but it's often a problem if you're in class or somewhere else where you need to keep your Mac quite. To disable that sound permanently, just enter this into Terminal: sudo nvram SystemAudioVolume=%80 Now, your Mac will be silent as a ninja on boot.