What can you do to solve the NTFS drive read only on Mac problem? Find the answer in the article. That is to say, you can’t write to any data to the disk such as saving files, renaming files, deleting files or editing files. When they try to use their newly bought external hard drive on a Mac computer, only to find that the drive is read-only. However, people who are not familiar with file system may not know that NTFS is not fully supported in macOS. NTFS is the proprietary file system by Microsoft and the default file systemforinternal hard disk on Windows desktops and laptops.Windows computers still take the most market share of personal computers, so many hard drive manufacturers initialize their disks with Windows NTFS drives.