See Available Space in Finder
Youcanseewhat'stakingupspaceonyourMacwithinSystemSettings.SelectGeneralinthesidebar,thenscrolldownandclicktheStorageSettingsbutton.ViaDiskUtility·Howtoseehowmuchstorage...·HowtomanagestorageonMac,Tofindoutwhat'stakingstorageonyourMac,youcangototh...。參考影片的文章的如下: