Older operating systems may need a patch installed for exFAT compatibility. By default, the maximum cluster size for NTFS under Windows NT 4.0 and later versions of Windows is 4 kilobytes (KB). Windows 7 and Mac OS 10.6.6 and higher are compatible with exFAT out of the box. 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. This file system is also compatible with Mac. The 4 GB barrier is a hard limit of FAT: the file system uses a 32-bit field to store the file size in bytes, and 2^32 bytes = 4 GiB (actually, the real limit is 4 GiB minus one byte, or 4 294 967 295 bytes, because you can have files of zero length). The maximum theoretical limit on the size of an individual file is 16 EiB minus 1 KB. exFAT is compatible with a lot of different devices and operating systems. If you only intend to use the drive with your PC, then either of these systems should work just fine. 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. The memory card in it is formatted as exFAT, which supports file sizes greater than 4 GB. Incorporate extensibility for future innovation. There is no realistic file-size or partition size limits. Photographers, videographers, and other creators often run into the limits of conventional FAT32-based storage. 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. exFAT - the Next-generation File System. This is because NTFS file compression is not possible on drives that have a larger cluster size. The exFAT file system uses 64 bits to describe file size, thereby enabling applications which depend on very large files. 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. By widely used I mean supported by different operating systems. SOLUTION 1 - Format in exFAT exFAT file system that allows a single file larger than 4GB to be stored on the device. 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. The exFAT file system also allows for clusters as large as 32MB, effectively enabling very large storage devices. exFAT is an extension of FAT32, and is probably not as widely used as NTFS and is certainly less widely used than FAT32. 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