Specifies the number of sectors per track. If the 2m option is given,
number of 512-byte sector equivalents on generic tracks (i.e. not head 0
track 0). If the 2m option is not given, number of physical sectors per
track (which may be bigger than 512 bytes).
Formats a single side (equivalent to -h 1)
Formats a 360K double-sided disk (equivalent to -f 360). When used
together with -the 1 switch, this switch formats a 180K disk
Formats a disk with 8 sectors per track.
MSDOS format's q, u and b options are not
supported, and s has a different meaning.
The following options are specific to mtools:
Format the partition as FAT32.
The sizecode. The size of the sector is 2 ^ (sizecode + 7).
formats the disk as an XDF disk. See section XDF, for more details. The disk
has first to be low-level formatted using the xdfcopy utility included
in the fdutils package. XDF disks are used for instance for OS/2 install
2m format. The parameter to this option describes the number of
sectors on track 0, head 0. This option is recommended for sectors
bigger than normal.
don't use a 2m format, even if the current geometry of the disk is a 2m
Data transfer rate on track 0
Data transfer rate on tracks other than 0
software sector size. This parameter describes the sector size in bytes used
by the MS-DOS filesystem. By default it is the physical sector size.
Uses the requested serial number, instead of generating one
If this option is given, an Atari style serial number is generated.
Ataris store their serial number in the OEM label.
creates the disk image file to install the MS-DOS filesystem on
it. Obviously, this is useless on physical devices such as floppies
and hard disk partitions, but is interesting for image files.
number of hidden sectors. This parameter is useful for formatting hard
disk partition, which are not aligned on track boundaries (i.e. first
head of first track doesn't belong to the partition, but contains a
partition table). In that case the number of hidden sectors is in
general the number of sectors per cylinder. This is untested.
Sets the fsVersion id when formatting a FAT32 drive. In order to find
this out, run minfo on an existing FAT32 drive, and mail me about it, so
I can include the correct value in future versions of mtools.
Sets the size of a cluster (in sectors). If this cluster size would
generate a FAT that too big for its number of bits, mtools automatically
increases the cluster size, until the FAT is small enough.
Sets the number of FAT copies. Default is 2. This setting can also be
specified using the MTOOLS_NFATS environment variable.
Sets the size of the root directory (in sectors). Only applicable to 12
and 16 bit FATs. This setting can also be specified using the
MTOOLS_DIR_LEN environment variable.
Sets the length of the FAT.
Use the bootsector stored in the given file or device, instead of using
its own. Only the geometry fields are updated to match the target disks
Keep the existing boot sector as much as possible. Only the geometry
fields and other similar filesystem data are updated to match the target
Use a non-standard media descriptor byte for this disk. The media
descriptor is stored at position 21 of the boot sector, and as first
byte in each FAT copy. Using this option may confuse DOS or older mtools
version, and may make the disk unreadable. Only use if you know what you
To format a diskette at a density other than the default, you must supply
(at least) those command line parameters that are different from the
Mformat returns 0 on success or 1 on failure.
It doesn't record bad block information to the Fat, use
mbadblocks for that.
Mtools' texinfo doc
Viewing the texi doc
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items, such as crossreferences, footnotes and indices are lost in this
translation process. Indeed, these items have no appropriate
representation in the manpage format. Moreover, not all information has
been translated into the manpage version. Thus I strongly advise you to
use the original texinfo doc. See the end of this manpage for
instructions how to view the texinfo doc.
To generate a printable copy from the texinfo doc, run the following