A pop-up window will open stating all the essential details of the hard drive.Right-click to get the context menu and go to the 'Get Info' section. Select the Macintosh HD (or Fusion drive). Here, you can view all the partitions and external devices.Firstly, launch Finder on your Mac and from its sidebar, go the Devices section, and select the root directory.Here's how to see how much space is left on your Mac storage. In this way, you can get a clear idea of how much space in left in Mac and you can clear other content accordingly. How to See How Much Space Is Left on Macīefore you learn how to clear space on Mac, it is important to know about the system's available storage. How to Recover Lost Data While Clearing Space