MOUNT_CD9660(8) FreeBSD System Manager's Manual MOUNT_CD9660(8)
NAME
mount_cd9660 - mount an ISO-9660 file system
SYNOPSIS
mount_cd9660 [-begjrv] [-C charset] [-G gid] [-m mask] [-M mask]
[-o options] [-s startsector] [-U uid] special node
DESCRIPTION
The mount_cd9660 utility attaches the ISO-9660 file system residing on
the device special to the global file system namespace at the location
indicated by node. This command is normally executed by mount(8) at boot
time.
The options are as follows:
-b Relax checking for Supplementary Volume Descriptor Flags field
which is set to a wrong value on some Joliet formatted disks.
-e Enable the use of extended attributes.
-g Do not strip version numbers on files. (By default, if there are
files with different version numbers on the disk, only the last
one will be listed.) In either case, files may be opened without
explicitly stating a version number.
-G group
Set the group of the files in the file system to group. The
default gid on volumes without extended attributes or Rockridge
extensions is zero.
-U user
Set the owner of the files in the file system to user. The
default uid on volumes without extended attributes or Rockridge
extensions is zero.
-m mask
Specify the maximum file permissions for files in the file
system. For example, a mask of 544 limits the owner to read and
execute permissions for files and others to only read permission.
See chmod(1) for more information about octal file modes. The
default mask is 7777. The default permissions on volumes without
extended attributes or Rockridge extensions is 555.
-M mask
Specify the maximum file permissions for directories in the file
system. See the previous option's description for details.
-j Do not use any Joliet extensions included in the file system.
-o 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. The following cd9660
specific options are available:
extatt Same as -e.
gens Same as -g.
nojoliet Same as -j.
norrip Same as -r.
brokenjoliet Same as -b.
-r Do not use any Rockridge extensions included in the file system.
-s startsector
Start the file system at startsector. Normally, if the
underlying device is a CD-ROM drive, mount_cd9660 will try to
figure out the last track from the CD-ROM containing data, and
start the file system there. If the device is not a CD-ROM, or
the table of contents cannot be examined, the file system will be
started at sector 0. This option can be used to override the
behaviour. Note that startsector is measured in CD-ROM blocks,
with 2048 bytes each. This is the same as for example the info
command of cdcontrol(1) is printing. It is possible to mount an
arbitrary session of a multi-session CD by specifying the correct
startsector here.
-C charset
Specify local charset to convert Unicode file names when using
Joliet extensions.
-v Be verbose about the starting sector decisions made.
EXAMPLES
The following command can be used to mount a Kodak Photo-CD:
mount_cd9660 -o rw -v -s 0 /dev/cd0 /cdrom
SEE ALSO
cdcontrol(1), mount(2), unmount(2), cd9660(4), fstab(5), mdconfig(8),
mount(8)
HISTORY
The mount_cd9660 utility first appeared in 4.4BSD.
The Unicode conversion routine was added by Ryuichiro Imura
<imura@ryu16.org> in 2003.
BUGS
POSIX device node mapping is currently not supported.
Version numbers are not stripped if Rockridge extensions are in use. In
this case, accessing files that do not have Rockridge names without
version numbers gets the one with the lowest version number and not the
one with the highest.
There is no ECMA support.
FreeBSD 15.1-STABLE-HBSD December 6, 2024 MOUNT_CD9660(8)