APFS is only supported on macOS 10.13 or later.ĮxFAT-Compatible with macOS and Windows.Format Seagate One Touch SSD to HFS+ if you intend to use it with Time Machine. You cannot use an APFS-formatted disk as your Time Machine backup drive.Windows cannot natively read or write to HFS+ (journaled) volumes.ĪPFS (Apple File System)-An Apple file system optimized for solid state drives (SSDs) and flash-based storage systems. This file system remains the best option for external hard drives and is the only format compatible with Time Machine. Mac OS Extended (HFS+)-An Apple file system optimized for macOS 10.12 and earlier. macOS can read NTFS volumes but cannot natively write to them. If you use the drive with only one type of computer, you can optimize file copy performance by formatting the drive in the native file system for your operating system-NTFS for Windows or HFS+ for macOS. Seagate One Touch SSD is preformatted exFAT for compatibility with both Mac and Windows computers.