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HP-UX 11i Version 3: February 2007

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mkfs — construct a file system (generic)


/usr/sbin/mkfs [-F FStype] [-o specific_options] [-V] special [operands]

/usr/sbin/mkfs [-F FStype] [-m] [-V] special


The mkfs command creates a file system by writing on the special file special. operands are listed on file-system-specific manpages (see the SEE ALSO section).


mkfs recognizes the following options:

-F FStype

Specify the file system type on which to operate (see fstyp(1M) and fs_wrapper(5)). If this option is not included on the command line, then the file system type is determined from the file /etc/fstab by matching special with an entry in that file. If there is no entry in /etc/fstab, then the file system type is determined from the file /etc/default/fs.


Display the command line that was used to create the file system. The file system must already exist. This option provides a means of determining the parameters used to construct the file system.

-o specific_options

Specify options specific to the file system type. specific_options is a list of suboptions and/or keyword/attribute pairs intended for an FStype-specific module of the command. See the file system specific manual entries for a description of the specific_options that are supported, if any.


Echo the completed command line, but perform no other action. The command line is generated by incorporating the specified options and arguments with other information derived from /etc/fstab. This option allows the user to verify the command line.


Execute the mkfs command to create a 32MB HFS file system on /dev/dsk/c1t2d0:

mkfs -F hfs /dev/dsk/c1t2d0 32768

Execute the mkfs command on an HFS file system, /dev/dsk/c1t2d0, to recreate the command that was used to create the file system on /dev/dsk/c1t2d0:

mkfs -F hfs -m /dev/dsk/c1t2d0


mkfs was developed by HP and the University of California, Berkeley.



Specifies the default file system type.


Static information about the file systems.


mkfs: SVID3

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