What are some functional differences between the Windows and the Mac versions of Transcend Elite? Category : Software / Firmware / Applications Note: 1. To have the external hard disk support both Windows and Mac operating systems, we recommend formatting the hard disk into FAT32 or exFAT format. 2. The disk lock/unlock function for MacOS version is still under evaluation. Is the answer helpful? Related Why do files occupy more disk space when saved to flash drives/external hard drives/solid state drives? My computer cannot recognize my StoreJet, and the OS asks me to format my StoreJet (external-HDD). What should I do if data transferring is being interrupted? ESD220C has drop frame issue in non Windows 10 operating system. Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started