xref: /freebsd/sbin/mount_cd9660/mount_cd9660.8 (revision 315ee00f)
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32.\"     @(#)mount_cd9660.8	8.3 (Berkeley) 3/27/94
33.\"
34.Dd August 11, 2018
35.Dt MOUNT_CD9660 8
36.Os
37.Sh NAME
38.Nm mount_cd9660
39.Nd mount an ISO-9660 file system
40.Sh SYNOPSIS
41.Nm
42.Op Fl begjrv
43.Op Fl C Ar charset
44.Op Fl o Ar options
45.Op Fl s Ar startsector
46.Ar special node
47.Sh DESCRIPTION
48The
49.Nm
50utility attaches the ISO-9660 file system residing on the device
51.Pa special
52to the global file system namespace at the location indicated by
53.Pa node .
54This command is normally executed by
55.Xr mount 8
56at boot time.
57.Pp
58The options are as follows:
59.Bl -tag -width indent
60.It Fl b
61Relax checking for Supplementary Volume Descriptor Flags field
62which is set to a wrong value on some Joliet formatted disks.
63.It Fl e
64Enable the use of extended attributes.
65.It Fl g
66Do not strip version numbers on files.
67(By default, if there are files with different version numbers on the disk,
68only the last one will be listed.)
69In either case, files may be opened without explicitly stating a
70version number.
71.It Fl j
72Do not use any Joliet extensions included in the file system.
73.It Fl o
74Options are specified with a
75.Fl o
76flag followed by a comma separated string of options.
77See the
78.Xr mount 8
79man page for possible options and their meanings.
80The following cd9660 specific options are available:
81.Pp
82.Bl -tag -width "brokenjoliet" -compact
83.It Cm extatt
84Same as
85.Fl e .
86.It Cm gens
87Same as
88.Fl g .
89.It Cm nojoliet
90Same as
91.Fl j .
92.It Cm norrip
93Same as
94.Fl r .
95.It Cm brokenjoliet
96Same as
97.Fl b .
98.El
99.It Fl r
100Do not use any Rockridge extensions included in the file system.
101.It Fl s Ar startsector
102Start the file system at
103.Ar startsector .
104Normally, if the underlying device is a CD-ROM drive,
105.Nm
106will try to figure out the last track from the CD-ROM containing
107data, and start the file system there.
108If the device is not a CD-ROM,
109or the table of contents cannot be examined, the file system will be
110started at sector 0.
111This option can be used to override the behaviour.
112Note that
113.Ar startsector
114is measured in CD-ROM blocks, with 2048 bytes each.
115This is the same
116as for example the
117.Cm info
118command of
119.Xr cdcontrol 1
120is printing.
121It is possible to mount an arbitrary session of a multi-session CD by specifying
122the correct
123.Ar startsector
124here.
125.It Fl C Ar charset
126Specify local
127.Ar charset
128to convert Unicode file names when using Joliet extensions.
129.It Fl v
130Be verbose about the starting sector decisions made.
131.El
132.Sh EXAMPLES
133The following command can be used to mount a Kodak Photo-CD:
134.Pp
135.Dl "mount_cd9660 -o rw -v -s 0 /dev/cd0 /cdrom"
136.Sh SEE ALSO
137.Xr cdcontrol 1 ,
138.Xr mount 2 ,
139.Xr unmount 2 ,
140.Xr cd9660 5 ,
141.Xr fstab 5 ,
142.Xr mdconfig 8 ,
143.Xr mount 8
144.Sh HISTORY
145The
146.Nm
147utility first appeared in
148.Bx 4.4 .
149.Pp
150The Unicode conversion routine was added by
151.An Ryuichiro Imura Aq Mt imura@ryu16.org
152in 2003.
153.Sh BUGS
154POSIX device node mapping is currently not supported.
155.Pp
156Version numbers are not stripped if Rockridge extensions are in use.
157In this case, accessing files that do not have Rockridge names without
158version numbers gets the one with the lowest version number and not
159the one with the highest.
160.Pp
161There is no ECMA support.
162