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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.
File Allocation Table (FAT) is a file system developed for personal computers and was the default file system for the MS-DOS and Windows 9x operating systems. [citation needed] Originally developed in 1977 for use on floppy disks, it was adapted for use on hard disks and other devices.
A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...
Metadata (up to v2.50) and file data is addressed more or less directly. In writing to such a disk in this format, any physical block on the disk may be chosen for allocation of new or updated files. Since this is the basic format, practically any operating system or file system driver claiming support for UDF should be able to read this format.
PKG – format used by Bungie for the PC Beta of Destiny 2, for nearly all the game's assets. CHR – format used by Team Salvato, for the character files of Doki Doki Literature Club! Z5 – format used by Z-machine for story files in interactive fiction. scworld – format used by Survivalcraft to store sandbox worlds.
The translation of the native 4096, 4112, 4160, or 4224-byte physical format (with 0, 8, 64, or 128-byte Data Integrity Fields) to a virtual 512, 520 or 528-byte increment is transparent to the entity accessing the hard disk drive. Read and write commands are issued to Advanced Format drives in the same format as legacy drives.
The type of drive. 0xF8 is used to denote a hard drive (in contrast to the several sizes of floppy). 0x16 2 bytes 0x0000 Unused This field is always 0 0x18 2 bytes 0x003F Sectors Per Track The number of disk sectors in a drive track. 0x1A 2 bytes 0x00FF Number Of Heads The number of heads on the drive. 0x1C 4 bytes 0x0000003F Hidden Sectors
The Transaction-Safe Extended FAT File System (TexFAT), TexFAT provides similar functionality to TFAT using the exFAT file system as the base file system instead of FAT. . Introduced with Windows Embedded CE 6.0, it is sometimes referred to as TFAT as well, which can lead to confusion with the original TFAT described a