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 How to format the flash drive to NTFS in Windows XP? Why do files occupy more disk space when saved to flash drives/external hard drives/solid state drives? If the files you hope to back up contain those that are not allowed to be backed up, a warning message will pop up from Elite and the backup task will be interrupted. Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started