macOS Sierra – How to read / write / format NTFS drive on mac
To get started, click the Spotlight icon at the top right of your screen and enter ‘Disk’ to launch Disk Utility. Insert your NTFS drive or USB stick and click to highlight the disk name in the white box on the left-hand side of the window. Select the ‘Erase’ tab. Under ‘Format’ choose ‘(MS-DOS FAT)’.