Search results
Results from the WOW.Com Content Network
File Allocation Table (FAT) is a file system developed for personal computers and was the default filesystem 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.
Formatting a disk for use by an operating system and its applications typically involves three different processes. [e]Low-level formatting (i.e., closest to the hardware) marks the surfaces of the disks with markers indicating the start of a recording block (typically today called sector markers) and other information like block CRC to be used later, in normal operations, by the disk ...
Formatting tools or non-DR SYS-type tools may clear these bits, but other disk tools should leave bits 15-8 unchanged. 0x02A 0x1F 2 Version (defined as 0.0). The high byte of the version number is stored at offset 0x02B, and the low byte at offset 0x02A. [4] FAT32 implementations should refuse to mount volumes with version numbers unknown by them.
FAT32, NTFS, exFAT, ReFS [2] Windows XP and later Yes Yes No Yes, with Windows Task Scheduler [b] Yes Yes, with Windows Task Scheduler [a] 2.22.995 [4] (May 2, 2018 (Drive Optimizer (formerly Disk Defragmenter) Microsoft: Bundled with Microsoft Windows: FAT16, FAT32, NTFS, ReFS Windows 2000 and later; Windows 95 and later Yes Yes Yes
Input format [f] Output format [g] OS ... FAT16, FAT32, HPFS, JFS, Xfs, UFS, HFS and NTFS: Linux: Free ... Comparison of disc authoring software; Comparison of disk ...
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.
fdisk is a command-line utility for disk partitioning.It has been part of DOS, DR FlexOS, IBM OS/2, and early versions of Microsoft Windows, as well as certain ports of FreeBSD, [2] NetBSD, [3] OpenBSD, [4] DragonFly BSD [5] and macOS [6] for compatibility reasons.
In computing, format is a command-line utility that carries out disk formatting. It is a component of various operating systems , including 86-DOS , MS-DOS , IBM PC DOS and OS/2 , Microsoft Windows and ReactOS .