To make sense of why MS would cut off the use of exFAT for internal hard drives, it has to be understood that exFAT still doesn't have a final specification. Photographers, videographers, and other creators often run into the limits of conventional FAT32-based storage. SOLUTION 1 - Format in exFAT exFAT file system that allows a single file larger than 4GB to be stored on the device. The maximum theoretical limit on the size of an individual file is 16 EiB minus 1 KB. If you’re curious, the file size limit is 16 exbibytes, but that’s more than the maximum partition dimensions, so the real size limit for a file stored on exFAT is the same as the limit size of the partition: 128 pebibytes. Formatting a volume from Windows Explorer when the Allocation Unit box in the Format dialog box lists Default Allocation Size. Incorporate extensibility for future innovation. NTFS File Size. However, I shot a continuous video about an hour long, and the camera stored the video on the memoy card as 4 individual files, 3 of them a hair over 4 GB, and the last one a bit under 4 GB. exFAT is an extension of FAT32, and is probably not as widely used as NTFS and is certainly less widely used than FAT32. With the potential of 4K video files to exceed hundreds of gigabytes, FAT32's 4GB single file limit makes it ill-suited for high-resolution media files. The whole purpose of exFAT was to allow easy transfer of large files between platforms in a format that didn't require third party drivers on either the Mac or Windows to read the drive. exFAT - the Next-generation File System. If you only intend to use the drive with your PC, then either of these systems should work just fine. This file system is also compatible with Mac. The exFAT file system uses 64 bits to describe file size, thereby enabling applications which depend on very large files. The exFAT file system also allows for clusters as large as 32MB, effectively enabling very large storage devices. By default, the maximum cluster size for NTFS under Windows NT 4.0 and later versions of Windows is 4 kilobytes (KB). Older operating systems may need a patch installed for exFAT compatibility. The specifications, features, and requirements of the exFAT file system include: File size limit of 16 exbibytes (2 64 −1 bytes, or about 10 19 bytes, which is otherwise limited by a maximum volume size of 128 PiB, or 2 57 −1 bytes), raised from 4 GiB (2 32 −1 bytes) in a standard FAT32 file system. Windows 7 and Mac OS 10.6.6 and higher are compatible with exFAT out of the box. The memory card in it is formatted as exFAT, which supports file sizes greater than 4 GB. Natively, you cannot store files larger than 4 GB on a FAT file system. exFAT is compatible with a lot of different devices and operating systems. By widely used I mean supported by different operating systems. 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