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   mkfs.fat    ( 8 )

создать файловую систему MS-DOS FAT (create an MS-DOS FAT filesystem)

Имя (Name)

mkfs.fat - create an MS-DOS FAT filesystem


Синопсис (Synopsis)

mkfs.fat [OPTIONS] DEVICE [BLOCK-COUNT]


Описание (Description)

mkfs.fat is used to create a FAT filesystem on a device or in an image file. DEVICE is the special file corresponding to the device (e.g. /dev/sdXX) or the image file (which does not need to exist when the option -C is given). BLOCK-COUNT is the number of blocks on the device and size of one block is always 1024 bytes, independently of the sector size or the cluster size. Therefore BLOCK-COUNT specifies size of filesystem in KiB unit and not in the number of sectors (like for all other mkfs.fat options). If omitted, mkfs.fat automatically chooses a filesystem size to fill the available space.

Two different variants of the FAT filesystem are supported. Standard is the FAT12, FAT16 and FAT32 filesystems as defined by Microsoft and widely used on hard disks and removable media like USB sticks and SD cards. The other is the legacy Atari variant used on Atari ST.

In Atari mode, if not directed otherwise by the user, mkfs.fat will always use 2 sectors per cluster, since GEMDOS doesn't like other values very much. It will also obey the maximum number of sectors GEMDOS can handle. Larger filesystems are managed by raising the logical sector size. An Atari-compatible serial number for the filesystem is generated, and a 12 bit FAT is used only for filesystems that have one of the usual floppy sizes (720k, 1.2M, 1.44M, 2.88M), a 16 bit FAT otherwise. This can be overridden with the -F option. Some PC-specific boot sector fields aren't written, and a boot message (option -m) is ignored.