dvdfs - The Digital Versatile Disk File System
Interfaces documented on this reference page conform to
industry standards as follows:
ISO/ITEC 13346:1995
Optical Storage Technology Association (OSTA) Universal
Disk Format (UDF) Specification, "OSTA UDF
Compliant Domain", Version 2.00.
ISO 9660:1988
Information Processing-Volume and file structure of
CD-ROM for information interchange.
Refer to the standards(5) reference page for more information
about industry standards and associated tags.
The Digital Versatile Disk File System enables the reading
of disks formatted in the Universal Disk Format (UDF).
User data sectors in a DVD-ROM can contain any type of
data in any format. However, for Tru64 UNIX support
through the dvdfs file system, the OSTA UDF file format
standard is mandatory. The file system limit for DVDFS is
int cfs_cdfs_mount_limit = 512.
Additionally, DVD-ROM standards require that the logical
sector size and the logical block (the user data block)
size be 2048 bytes.
DVD support in the UDF specification includes these levels:
DVD-ROM (Read-only):
Supports reading of UDF-formated files from DVD-ROM
disks. DVD-R (Write-once):
Supports the reading of UDF-formated files from a
DVD-ROM disk and supports writing, one time, UDFformated
files onto a DVD-ROM disk. DVD-RAM
(Rewritable):
Supports reading and writing of UDF-formated files
from and to a DVD-ROM disk.
At this time, the Tru64 UNIX dvdfs file system supports
only the DVD-ROM (Read-only) format.
See mount(8) for information about mounting and unmounting
a dvdfs file system, fstab(4) for information about
including dvdfs file system in a system's /etc/fstab file,
and disklabel(8) for information about labeling DVD-ROM
disks.
Commands: disklabel(8), mount(8)
Files: cdfs(4) fstab(4) delim off
dvdfs(4)
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