The exFAT file system uses 64 bits to describe file size, thereby enabling applications which depend on very large files. One way to solve the FAT32 file size limit is not to use the FAT32 file system at all: there are more recent systems to replace it, such as exFAT or NTFS. 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 is compatible with a lot of different devices and operating systems. exFAT - the Next-generation File System. This is because NTFS file compression is not possible on drives that have a larger cluster size. By widely used I mean supported by different operating systems. Incorporate extensibility for future innovation. 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. Formatting a volume from Windows Explorer when the Allocation Unit box in the Format dialog box lists Default Allocation Size. 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. 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 exFAT file system also allows for clusters as large as 32MB, effectively enabling very large storage devices. 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. By default, the maximum cluster size for NTFS under Windows NT 4.0 and later versions of Windows is 4 kilobytes (KB). If you only intend to use the drive with your PC, then either of these systems should work just fine. NTFS File Size. The memory card in it is formatted as exFAT, which supports file sizes greater than 4 GB. Photographers, videographers, and other creators often run into the limits of conventional FAT32-based storage. 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). This file system is also compatible with Mac. 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. 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