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HP-UX 11i Version 3: February 2007

Technical documentation

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newfs — construct a new file system


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


The newfs command is a "friendly" front-end to the mkfs command (see mkfs(1M)). The newfs command calculates the appropriate parameters and then builds the file system by invoking the mkfs command.

special represents a character (raw) special device.


newfs 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. Current valid Fstype values are: hfs and vxfs for the HFS and JFS (VxFS) file systems, respectively.

-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 actions. The command line is generated by incorporating the specified options and arguments and other information derived from /etc/fstab. This option allows the user to verify the command line.


Execute the newfs command to create an HFS file system on /dev/rdisk/disk2

newfs -F hfs /dev/rdisk/disk2


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



File that specifies the default file system type.


Static information about the file systems.

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