There’s no need to keep your Mac’s Trash can full, especially if you make regular backups of your files. Remember that individual applications such as iMovie, iPhoto and Mail each have their own Trash, so empty those frequently too. The most obvious and easy way to free up some space is to empty the Trash. About This Mac shows how much space is available on your hard disk A summary of each category is shown, which may help you to decide how best to reclaim disk space. To check how much space you are using for different categories such as audio, movies, photos and applications, select About This Mac from the Apple Menu, click the More Info button followed by the Storage tab.
