mount_udf(8) [osx man page]
MOUNT_UDF(8) BSD 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 indi- cated 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. 4th Berkeley Distribution December 6, 2006 4th Berkeley Distribution
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NEWFS_UDF(8) BSD System Manager's Manual NEWFS_UDF(8) NAME
newfs_udf -- construct a new UDF file system. SYNOPSIS
newfs_udf [-Ndeouw] [-b block-size] [-D defect-file-name] [--dup-meta-part-file] [-E ecc-in-blks] [--enc encoding-name] [-v vol-name] [-m media-type] [--meta-part-alloc-unit n] [--meta-part-align-unit n] [--meta-part-init-size n] [-p packet-size] [-r rev] [-s size] [-S start-block-address] [--spare-blks n] [-t access-type] [--unalloc-spc blk-addr num-blks] [--wipefs yes|no] [--userid uid] [-U uid] [--groupid gid] [-G gid] special DESCRIPTION
The newfs_udf command builds the UDF filesystem on the specified special device. The options are as follows: General options: -N Causes the file system parameters to be printed out without really creating the file system. -w Stop processing on warnings, default: no --wipefs yes|no Whether wipe existing file systems on the volume before formatting it. Default: wipe existing file systems when media-type is block device (blk), access-type is overwrite (ow), and the Keep Disc Open option (-o) is not specified; do not wipe existing file systems by default in all other cases. --largesparse Format the volume to use a non UDF-compliant format to efficiently support very large sparse files (up to 2^63 - 1, or 9,223,372,036,854,775,807 bytes). Sparse files on this volume that has holes larger than 1GB cannot be accessed by other UDF imple- mentations. Disc properties: -b block-size The block size of the file system, in bytes, default: the native block size of the device, or 2048 for an image file -d The file system manages defects by creating a sparable partition, default: no -e Use extended file entry instead of file entry, default: no -E ecc-in-blks ECC block size in number of blocks -m media-type The type of the media, can be blk (block device), var-packet (varible size packet writing), fix-packet (fixed size packet writing), or pow (pseudo overwrite), default: blk -t access-type The access type of the partition, can be wo (writeonce), ow (overwrite), or pow (pseudo overwrite), default: ow -o Keep the disc as open by only writing the first AVDP (e.g., background formating haven't finish, so the write of the last two AVDPs is not possible), default: close the disc for overwrite media, and keep it open for write once media -p packet-size The size of a packet in number of blocks, default: 1 -s size Size of the file system in blocks, default: size of the device UDF parameters: General: -r rev UDF version number, can be 1.02, 1.50, 2.00, 2.01, 2.50, or 2.60, default: 2.01 -u Creates unique id table (or unique id stream), default: no --unalloc-spc blk-addr num-blks Unallocated space recorded in unallocated space descriptor, default: no unallocated spc -v vol-name Volume identifier, max 127 ascii or 63 unicode chars, default: "Untitled UDF Volume" --enc encoding-name The character encoding of the volume name, can be "utf8" or "utf16", default: utf8 Virtual partitions (for CD-R, DVD-R SL/DL, DVD+R SL/DL, and HD DVD-R SL/DL): -S start-block-address The start block address of the last session. Newfs_udf will search for this value for optical media Sparable partitions (for CD-RW, DVD-RW, and DVD+RW): --spare-blks n Total number of sparing blocks (2 sparing tables are always used), default: 128 -D defect-file-name The name of the file containing all defect blocks. This file is a text file, contains the physical block address of the media that has defects. When one block of a packet is defective, the whole packet is marked as defective. The block numbers in the file is delimited by space. Multiple numbers can be on the same line. Metadata partitions (for BD-R with POW, BD-RE and other overwritable media with UDF 2.50 or higher ): --dup-meta-part-file Duplicate the content of the metadata file in the metadata mirror file, default: no --meta-part-alloc-unit n The allocation unit size of the metadata partition in number of blocks, default: max(32, eccSizeInBlks, packetSize) --meta-part-align-unit n The alignment unit size of the metadata partition in number of blocks, default: max(eccSizeInBlks, packetSize) --meta-part-init-size n The initial size of the metadata partition in number of blocks, default: 32 --userid uid or -U uid Use the specified uid (numeric value only) as the owner of the root directory. --groupid gid or -G gid Use the specified gid (numeric value only) as the group of the root directory. SEE ALSO
newfs(8) BUGS
Unallocated space is not supported yet. HISTORY
The newfs_udf utility first appeared in Mac OS X Leopard (10.5.0). Mac OS July 12, 2005 Mac OS