Drives configured with third-party utilities may show up as empty after upgrading your version of OS X.
Many programs available through the Mac App Store are standalone single-purpose tools and will not be affected by Apple's sandboxing requirements, but others will be forced to lose functionality.
While OS X makes external drives available to all users on the system, you can change this to ensure your files are only accessible by you.
If you want to share a drive but keep some files on it encrypted, you can easily do so with a couple of approaches in OS X.
Readers ask questions about library locations, Wi-Fi networks, and using an internal hard drive as an external drive.
If you need to get a structured list of the directories in a folder, TextWrangler can do that.
If your system hangs when going into Safe Mode, or will not load into Safe Mode at all, there are a couple of things you can do to fix the situation.
Intego's new approach to security offers a simple interface with more relevant software.
Do you know that there's a garbage collection inside your SSD? It's true! CNET editor Dong Ngo explains that and more. He also answers SSD-related questions.
By default the Mac OS supports running one instance of a program at a time in a specific user account; however, if more than one instance of a program is needed, then you can have the system launch it.