Operation steps 1. Back up important data：before starting，Be sure to back up your important data。Although partition resizing is generally safe，But the risk of data loss is always there。 2. Open Disk Utility： •Open Finder。 •Go to the Applications folder。 •Open the Utilities folder。 •Find and open Disk Utility。 3. Select disk：Select the hard drive or volume you want to resize in the list on the left，Make sure you select the entire hard drive and not a partition。 4. Resize partition： •Click the "Partition" button in the toolbar。 •In the pop-up window，You will see the partition chart of your current hard drive。 •Hover your mouse over the divider of the partition chart...