You can hover over unnamed sections to see what they are and how much space they're taking up. Once you're there, select the Storage option (in the middle) and check out what's taking up space. Select the first option, 'About this Mac', so you can see what's going on. First, check what's taking up so much spaceĬlick the little Apple icon in the upper left corner of your screen. If you've had one of these experiences and now need to clean up your Mac, this is the guide for you. Have you ever gotten a notification that you're running low on disk space on your Mac? Or have you checked your storage only to find that your Photos are taking up an appalling 84GB?