The disk usage shows how much data is being kept on a disk and how much free space it has. For example, when a disk has 800 GB, it means that you can store the information (files) on it with the size no more than 800 gigabytes. It is accepted to measure the disk space in kilobytes, megabytes, gigabytes, or terabytes. How do you clear disk space on a Mac?ĭisk space is a total capacity of a drive or a total amount of bytes that the drive can keep. What are good hard drive space analyzers for a Mac? How do you find the biggest files on a Mac? How do you see how much space is left on a Mac? In this article we are going to share a comprehensive guide on all the questions you may have about Mac disk space: But before cleaning, it is important to analyze the disk space usage and find out what is taking up the most HD space. There are special utilities designed to help to easily clear disk space. The user sometimes may learn about it when the message “ Startup disk is full” suddenly appears on the screen. Each Mac computer user most likely encounters a common problem – a lack of free disk space.