Man Linux: Main Page and Category List


     newfs_hfs - construct a new HFS Plus file system


     newfs_hfs [-N [partition-size]] [-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]


     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 [partition-size]
                 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
                 recommended 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

     -n node-size-list
                 This specifies the b-tree node sizes, in bytes, for the
                 various 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.




     The newfs_hfs command appeared in Mac OS X Server 1.0 .