Fat64

Fat64

exFAT (Extended File Allocation Table) is a proprietary file system designed especially for flash drives developed by Microsoft, which has applied for patent protection. It is supported in Windows XP and Windows Server 2003 with update KB955704, Windows Embedded CE 6.0, Windows Vista with Service Pack 1, Windows Server 2008, Windows 7, Windows 8, Windows Server 2008 R2 (except Windows Server 2008 Server Core), Mac OS X Snow Leopard starting from 10.6.5, Mac OS X Lion and OS X Mountain Lion.

exFAT can be used where the NTFS file system is not a feasible solution, due to data structure overhead, or where the file size limit of the standard FAT32 file system (without FAT+ extension) is unacceptable.

exFAT is also supported in a number of media devices such as modern flat panel TVs, media centers, and portable media players.

Unlike NTFS, exFAT cannot pre-allocate disk space for a file by just marking arbitrary space on disk. As in FAT, to create a file of known length exFAT has to perform amount of writing equal to the size of the file.