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While storage devices usually have their size expressed in powers of 10 (for instance a 1 TB Solid State Drive will contain at least 1,000,000,000,000 (10 12, 1000 4) bytes), filesystem limits are invariably powers of 2, so usually expressed with IEC prefixes.
Like NTFS, exFAT can pre-allocate disk space for a file by just marking arbitrary space on disk as "allocated". For each file, exFAT uses two separate 64-bit fields in the directory: the valid data length (VDL), which indicates the real size of the file, and the physical data length.
A basic data partition can be formatted with any file system, although most commonly BDPs are formatted with the NTFS, exFAT, or FAT32 file systems. To programmatically determine which file system a BDP contains, Microsoft specifies that one should inspect the BIOS Parameter Block that is contained in the BDP's Volume Boot Record.
NTFS 1.0 is incompatible with 1.1 and newer: volumes written by Windows NT 3.5x cannot be read by Windows NT 3.1 until an update (available on the NT 3.5x installation media) is installed. [18] 1.1 Windows NT 3.5: 1994 Named streams and access control lists [19] NTFS compression support was added in Windows NT 3.51: 1.2 Windows NT 4.0: 1996
FAT32, NTFS Windows XP and later Yes Yes Yes Yes 6.1.2.0 (28 July 2021) UltraDefrag: Dmitri Arkhangelski, Justin Dearing, Sayem Chaklader, Stefan Pendl Commercial software (8.0+) / GNU GPL (7.1.x) FAT12, FAT16, FAT32, NTFS, exFAT, ReFS [12] Windows NT 4.0 and later Yes Yes Yes [d] [13] Yes, with Windows Task Scheduler: Yes Yes, with Windows ...
Various versions of Windows support various file systems, including:FAT12, FAT16, FAT32, HPFS, or NTFS, along with network file systems shared from other computers, and the ISO 9660 and UDF file systems used for CDs, DVDs, and other optical disc drives such as Blu-ray.
exFAT is not backward compatible with FAT file systems such as FAT12, FAT16 or FAT32. The file system is supported with newer Windows systems, such as Windows XP, Windows Server 2003, Windows Vista, Windows 2008, Windows 7, Windows 8, Windows 8.1, Windows 10 and Windows 11. exFAT is supported in macOS starting with version 10.6.5 (Snow Leopard ...
NTFS 1.1 1995: Windows 95: FAT16B with VFAT: 1996: Windows NT 4.0: NTFS 1.2 1998: Mac OS 8.1 / macOS: HFS Plus (HFS+) 1998: Windows 98: FAT32 with VFAT: 2000 SUSE Linux Enterprise 6.4 ReiserFS [1] [2] 2000: Windows Me: FAT32 with VFAT: 2000: Windows 2000: NTFS 3.0 2000: Ututo GNU/Linux: ext4: 2000: Knoppix: ext3: 2000: Red Hat Linux: ext3: 2001 ...