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NEWFS_HFS(8)		  BSD System Manager's Manual		  NEWFS_HFS(8)

NAME
     newfs_hfs — construct a new HFS Plus file system

SYNOPSIS
     newfs_hfs [-N] [-U uid] [-G gid] [-M mask] [-h | -w] [-s] [-b block-size]
	       [-c clump-size-list] [-i first-cnid] [-J [journal-size]]
	       [-n node-size-list] [-v volume-name] special

DESCRIPTION
     Newfs_hfs builds an HFS Plus file system on the specified special device.
     Before running newfs_hfs the disk should be partitioned using the Disk
     Utility application or pdisk(8).

     The file system default parameters are calculated based on the size of
     the disk partition. Typically the defaults are reasonable, however
     newfs_hfs has several options to allow the defaults to be selectively
     overridden.  The options are as follows:

     -N		 Causes the file system parameters to be printed out without
		 really creating the file system.

     -U uid	 Set the owner of the file system's root directory to uid.

     -G gid	 Set the group of the file system's root directory to gid.

     -M mask	 Specify the access permissions mask for the file system's
		 root directory.

     -h		 Creates a legacy HFS format filesystem. This option is not
		 recomended for file systems that will be primarily used with
		 Mac OS X or Darwin.

     -s		 Creates a case-sensitive HFS Plus filesystem. By default a
		 case-insensitive filesystem is created.  Case-sensitive HFS
		 Plus file systems require a Mac OS X version of 10.3 (Darwin
		 7.0) or later.

     -w		 Adds an HFS wrapper around the HFS Plus file system.  This
		 wrapper is required if the file system will be used to boot
		 natively into Mac OS 9.

     -b block-size
		 The allocation block size of the file system.	The default
		 value is 4096.

     -c clump-size-list
		 This specifies the clump and/or initial sizes, in allocation
		 blocks, for the various metadata files.  Clump sizes are
		 specified with the -c option followed by a comma separated
		 list of the form arg=blocks.

		 Example:  -c c=5000,e=500

		 a=blocks    Set the attribute file clump size.

		 b=blocks    Set the allocation bitmap file clump size.

		 c=blocks    Set the catalog file clump size.

		 e=blocks    Set the extent overflow file clump size.

     -i first-cnid
		 This specifies the initial catalog node ID for user files and
		 directories. The default value is 16.

     -J [journal-size]
		 Creates a journaled HFS+ volume.  The default journal size is
		 8MB.  Appending an 'M' to the journal size implies megabytes
		 (i.e. 64M is 64 megabytes).  The maximum journal size is 512
		 megabytes.

     -n node-size-list
		 This specifies the b-tree node sizes, in bytes, for the vari‐
		 ous b-tree files.  Node sizes are specified with the -n
		 option followed by a comma separated list of the form
		 arg=bytes. The node size must be a power of two and no larger
		 than 32768 bytes.

		 Example:  -n c=8192,e=4096

		 a=bytes     Set the attribute b-tree node size.

		 c=bytes     Set the catalog b-tree node size.

		 e=bytes     Set the extent overflow b-tree node size.

     -v volume-name
		 Volume name (file system name) in ascii or UTF-8 format.

SEE ALSO
     mount(8), pdisk(8)

HISTORY
     The newfs_hfs command appeared in Mac OS X Server 1.0 .

Mac OS X			 April 1, 2003			      Mac OS X
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