By default, an NTFS-formatted disk can be mounted and read on macOS, but files will appear locked or read-only.
MacOS is fully compatible with Microsoft FAT and exFAT file systems but not the Microsoft NTFS file system.
Scenario 1: The external hard drive is formatted with the NTFS file system. In this tutorial, I will explain three scenarios you may face and their corresponding solutions. If external hard drive suddenly shows read-only after you attach it to your Mac device, it is definitely very inconvenient to use this external hard drive. People use external hard drives as extended storage for computers or backup disks for important files, as a result, frequent file sharing, and modification are needed.
