Disk Utility and how to use it:
Housekeeping on a Mac has never been easier. In this video we show you how to check your hard drive is ok and that the data on it including the operating system is journaled correctly within the machine. Doing this simple task once a month can help preserve the life of the hard drive and ensure if your machine encounter a hiccup such as a power failure won’t affect the machine operation effectiveness and more important enable the machine to boot correctly.