OneDrive for Mac will soon support syncing with removable external drives, following the previous support for non-removable drives. This feature is available to Insiders using build 25.097 or later on macOS 15.0 or later. The external drives must be formatted for APFS, protected by FileVault, and not be read-only, network drives, or marked as quarantined. Users cannot transfer external drives between Macs for migrating OneDrive files; they must reconfigure OneDrive on the new device. Microsoft is seeking user feedback on this feature but has not provided a timeline for wider availability.