How to Mute the Mac Startup Sound

Many Mac users are fond of the Mac startup sound that chimes on system boot, but there are definitely times when booting that you’d rather just be quiet, say a library or coffee shop. Thus, we’re going to show you how to mute that boot up sound on any Mac, MacBook model (Pro, Air), iMac, or Mac Pro, we’ll offer a temporary solution, and a few different permanent solutions to mute the sound as well.


I just came across a really useful QuickLook plugin called SuspiciousPackage that lets you inspect those .pkg package installer files that so many Mac apps and downloads come in. Using this plugin, you can determine if an admin password is required, how many install scripts are in the package file, where the installation locations of files is going to be, and if a restart is required. 
You can change the Mac OS X login screen background picture using a few different methods. We have covered this tip before but it was based around a few Terminal commands that might not be easy to follow for the average Mac user without command line experience. With that in mind, here are ways to change the Mac login wallpaper:
Locker is a very simple Dashboard widget that does something Mac OS X should have included by default, it instantly locks your Mac desktop. 

