MOUNT_UDF(8)                System Manager's Manual               MOUNT_UDF(8)

NAME
     mount_udf – mount a UDF filesystem

SYNOPSIS
     mount_udf [-o options] [-s sessionStart] [-n lastRecordedLBA]
               [-b blockSize] [-p packetSizeInBlocks] [-v verificationPolicy]
               [-w] devicePath mountPath

DESCRIPTION
     The mount_udf command attaches the UDF filesystem residing on the device
     devicePath to the global filesystem namespace at the location indicated
     by mountPath.  This command is normally executed by mount(8) at boot
     time.

     The options are as follows:

     -o options
             Options are specified with a -o flag followed by a comma
             separated string of options.  See the mount(8) man page for
             possible options and their meanings.

     -v verificationPolicy
             This is an advanced option not useful for regular use.  It
             controlls the verification policy when writing to RW type optical
             media.  Its value can be "meta", "all", or "none".  Policy "meta"
             means only the metadata are verified after they are written.
             This is the default policy.  Policy "all" means to verify data
             written, which could be several times slower than policy "meta".
             Policy "none" does not verify any data.  It is only slightly
             faster than "meta" in normal cases, but may result a corrupted
             UDF disc if the write of metadata fails.

     -s sessionStart
             This is an advanced option not useful for regular use.  When
             manually mounting a UDF volume with Virtual Partition, it
             specifies the start Logical Block Address of the last session
             where UDF data structures (VRS and AVDP) resides.  This value
             overrides the value obtained from the device.

     -n lastRecordedLBA
             This is an advanced option not useful for regular use.  When
             manually mounting a UDF volume with Virtual Partition, it
             specifies the last recorded Logical Block Address where the UDF
             VAT ICB will be searched.  This value overrides the value
             obtained from the device.

     -b blockSize
             This is an advanced option not useful for regular use.  It
             specifies the block size in bytes used when mounting the UDF
             volume.  This value overrides the value obtained from the device.

     -p packetSizeInBlocks
             This is an advanced option not useful for regular use.  It
             specifies the packet size in blocks when manually mounting the
             UDF volume.  This value overrides the value obtained from the
             device.

     -w      This is an advanced option not useful for regular use.  It forces
             to enable the experimental packet writing function on optical
             media that has not been fully supported, such as CD-R, CD-RW,
             DVD-R, DVD+R, HD DVD-R, and BD-R.  Writing to these media does
             not work on some drives and may cause data corruption or data
             loss on some other drives.  Therefore, this flag should be used
             only by file system developers when debugging the experimental
             write functions.

     The -s, -n, -b, and -p flags are not useful in normal use.  They are
     mainly used for debugging and data recovery.  Since the -s, -n, and -p
     flags are all specified in units of block size, when any of these flags
     are specified, it is strongly recommended that the -b flag is also
     specified.

SEE ALSO
     mount(2), unmount(2), fstab(5), mount(8)

BUGS
     Reading of all UDF revisions (1.02 - 2.60) on both block device (e.g.,
     hard drives and USB drives) and most optical media is supported.  Writing
     to block devices, DVD-RW and DVD+RW is supported with the following
     exceptions: (1) Cannot write Finder Info, Resource Fork, or other
     extended attributes in UDF volumes of revision 1.02 and 1.50; (2) Cannot
     write to mirrored metadata partition.

HISTORY
     The mount_udf utility first appeared in Mac OS X.

BSD 4                          December 6, 2006                          BSD 4