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? Why is my new external hard drive not working on my computer? Why is the writing speed of my StoreJet extremely slow when the reading speed is normal? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started