mkfs(8) [bsd man page]

MKFS(8) 						      System Manager's Manual							   MKFS(8)

NAME

       mkfs - construct a file system

SYNOPSIS

       /sbin/mkfs [ -i bytes ] [ -s size ] [ -m gap ] [ -n modulus ] special

DESCRIPTION

       N.B.: file systems are normally created with the newfs(8) command.

       Mkfs  constructs a file system by writing on the special file special.  The size of the filesystem in logical blocks is specified by the -s
       size option.  Logical blocks are 1K (2 sectors) under 2.11BSD.

	    NOTE: The newfs(8) program's -s option is in units of sectors.  Newfs(8) converts this to filesystem (logical) blocks for mkfs(8).

       The number of inodes is calculated based on the argument bytes to the -i option.  The default is 4096.  If more inodes  are  desired  in  a
       filesystem (there is an absolute maximum of 65500) then a lower value for bytes should be used, perhaps 3072 or even 2048.

       The  flags  -m  gap  and  -n  modulus  determine the block interleaving of the freelist that will be constructed, where gap is the distance
       between successive 1024-byte blocks, and modulus is the number of blocks before the pattern repeats, typically one cylinder.   The  optimal
       values  for  these parameters vary with the speed and geometry of the disk, as well as the speed of the processor.  Newfs(8) will calculate
       the correct values in almost all cases from the disklabel.

SEE ALSO

       fs(5), dir(5), disklabel(8), fsck(8), mkproto(8) newfs(8)

BUGS

       The lost+found directory is created but the boot block is left uninitialized (see disklabel(8).)

3rd Berkeley Distribution					 November 16, 1996							   MKFS(8)

MKFS.MINIX(8)						       System Administration						     MKFS.MINIX(8)

NAME

       mkfs.minix - make a Minix filesystem

SYNOPSIS

       mkfs.minix [options] device [size-in-blocks]

DESCRIPTION

       mkfs.minix creates a Linux MINIX filesystem on a device (usually a disk partition).

       The device is usually of the following form:

	      /dev/hda[1-8] (IDE disk 1)
	      /dev/hdb[1-8] (IDE disk 2)
	      /dev/sda[1-8] (SCSI disk 1)
	      /dev/sdb[1-8] (SCSI disk 2)

       The device may be a block device or a image file of one, but this is not enforced.  Expect not much fun on a character device :-).

       The  size-in-blocks parameter is the desired size of the file system, in blocks.  It is present only for backwards compatibility.  If omit-
       ted the size will be determined automatically.  Only block counts strictly greater than 10 and strictly less than 65536 are allowed.

OPTIONS

       -c, --check
	      Check the device for bad blocks before creating the filesystem.  If any are found, the count is printed.

       -n, --namelength length
	      Specify the maximum length of filenames.	Currently, the only allowable values are 14 and 30 for file system versions 1 and 2.  Ver-
	      sion 3 allows only value 60.  The default is 30.

       -i, --inodes number
	      Specify the number of inodes for the filesystem.

       -l, --badblocks filename
	      Read the list of bad blocks from filename.  The file has one bad-block number per line.  The count of bad blocks read is printed.

       -1     Make a Minix version 1 filesystem.  This is the default.

       -2, -v Make a Minix version 2 filesystem.

       -3     Make a Minix version 3 filesystem.

       -V, --version
	      Display version information and exit.  The long option cannot be combined with other options.

       -h, --help
	      Display help text and exit.

EXIT CODES

       The exit code returned by mkfs.minix is one of the following:

       0      No errors

       8      Operational error

       16     Usage or syntax error

SEE ALSO

       fsck(8), mkfs(8), reboot(8)

AVAILABILITY

       The mkfs.minix command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.

util-linux							     June 2015							     MKFS.MINIX(8)