A:Answer Hi Thania, Please be informed that the WD Easystore drive comes preformatted in NTFS format for Windows OS, However, in order to use the drive for macOS you can reformat the drive with macOS supported HFS+J file system by using this link: https://support-en.wd.com/app/answers/detail/a_id/3879 -Need Help? Please see our "'Contact Us" page for information.