I'm often asked by our Mac users about when and how to defrag their hard drive. I know this has been a routine that Windows users are familiar with and have done on occasion to increase the speed of their computer. But on a Mac...just don't do it!
"How can that be?", you ask. Because the hard drive and the operating system on a Mac are designed to take care of all that for you. Defragging...or disk optimization...is routinely managed in the background by your operating system. In addition, larger hard drives in use today make the old process of breaking up files into small bits and tucking them in any unused space on the hard drive less likely now.
To make things even better for you, the Mac places files in places where they will be used to their best advantage. Downloading a defragging application and running it on your Mac can move those files and actually slow down your Mac.
So the next time you think you should defrag your hard drive on your Mac, put down the mouse and step away from the machine! All that work is already being done for you.