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extendfs_hfs(1M)					      extendfs_hfs(1M)

NAME
       extendfs_hfs: extendfs - extend HFS file system size

SYNOPSIS
       size] special

DESCRIPTION
       If  the original HFS file system image created on special does not make
       use of all of the available space, the command can be used to  increase
       the  capacity  of an HFS file system by updating the file system struc‐
       ture to include the extra space.

       The command-line parameter special specifies the character device  spe‐
       cial  file of either a logical volume or a disk partition.  The special
       must be unmounted before the command can be run (see mount(1M)).

   Options
       recognizes the following options:

	      Specify the HFS file system type.

	      Query the size of
			special.  No file system extension will be done.

	      Verbose flag.

	      Specifies the number of
			blocks to be added to the file system.	If the	number
			of  blocks is not specified, the maximum possible size
			is used.

EXAMPLES
       To increase the capacity of a file system created on a logical  volume,
       enter:

WARNINGS
       The  root  file system cannot be extended using the command because the
       root file system is always mounted,  and	 the  command  only  works  on
       unmounted file systems.

       will fail if used on a file system, on a logical volume, where the log‐
       ical block size of the logical volume is greater than the file system's
       fragment	 size.	 The  logical block size, of a logical volume changes,
       when additional disks with larger sector size are added.

RETURN VALUE
       returns the following values:

	       0	No errors were detected and file system	 was  success‐
			fully extended.
	       1	Command aborted.

SEE ALSO
       extendfs(1M), lvextend(1M), mkfs(1M), mount(1M), umount(1M).

							      extendfs_hfs(1M)

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