Even if the external hard drive is read-only on Mac, this iBoysoft tool enables you to write to NTFS drives on the Mac with ease. Under such a circumstance, a professional NTFS driver for Mac like iBoysoft NTFS for Mac is exactly what you need. Because you can read NTFS drive on Mac only and you can't write to this drive normally in this case. However, the NTFS format can be a hassle for users who need to use the same external hard drive on both Mac and Windows. This is because Windows is the most commonly used around the world.

Usually, most hard drive manufacturers use the NTFS(New Technology File System) to format their external HDD as a factory standard, including many famous brands such as Seagate Backup Plus Ultra Touch and WD My Passport. This method suits you most if you just want to use it occasionally on different OS or don't want to lose all the files caused by formatting drive for Mac and PC. If you need to use an external hard drive on Mac that is not completely compatible with your computer OS and you have the urge to format hard drive for Mac and PC, you should know there is a more feasible way to make your external hard drives compatible with your Mac and PC. How to make an external hard drive compatible with Mac and PC without formatting

Mac odd external drive format options