mount_hfs(1M)mount_hfs(1M)NAME
mount_hfs: mount, umount - mount and unmount HFS file systems
SYNOPSIS
specific_options] {special|directory}
specific_options] special directory
{special|directory}
DESCRIPTION
The command mounts file systems. Only a superuser can mount file sys‐
tems. Other users can use to list mounted file systems.
The command attaches special, a removable file system, to directory, a
directory on the file tree. directory, which must already exist, will
become the name of the root of the newly mounted file system. special
and directory must be given as absolute path names. If either special
or directory is omitted, attempts to determine the missing value from
an entry in the file. can be invoked on any removable file system,
except
If is invoked without any arguments, it lists all of the mounted file
systems from the file system mount table,
The command unmounts mounted file systems. Only a superuser can
unmount file systems.
Options (mount)
recognizes the following options:
Attempt to mount all file systems described in
All optional fields in must be included and sup‐
ported. If is specified, all HFS file systems in
are mounted. If is specified in an entry's
option list, this entry is skipped. File systems
are not necessarily mounted in the order listed
in
Verbose mode. Write a message to standard output indicating
which file system is being mounted.
Force the file system to be mounted,
even if the file system clean flag indicates that
the file system should have run on it before
mounting (see fsck(1M)). This option is valid
only on HFS file systems.
Specify the HFS file system type (see
fstyp(1M)).
Limit actions to local file systems only.
Specify options specific to the HFS file system type.
specific_options is a list of comma separated
suboptions and/or keyword/attribute pairs
intended for the HFS specific module of the com‐
mand.
The following specific_options are valid on HFS
file systems.
Use all default options.
When given, this must be the only
option specified.
Mount read-write (default).
Mount read-only.
Allow set-user-ID execution (default).
Do not allow set-user-ID execution.
Enable, where possible, asynchronous writes to
disk.
Enable delayed or buffered writes to disk.
This is the default.
Enable relaxed posting of file system metadata.
Enable rigorous posting of file system metadata.
This is the default.
Attempt to enable the creation of files greater
than 2 gigabytes in size.
File systems have to be created or
configured to enable large files
(see mkfs_hfs(1M) and
fsadm_hfs(1M)).
Attempt to disable the creation of files greater
than 2 gigabytes in size.
File systems have to be created or
configured to disable large files.
(see mkfs_hfs(1M) and
fsadm_hfs(1M)).
Enable user quotas
(valid only for file systems).
HFS supports user quotas only.
Disable disk quotas (default).
Mounting with the option also enables quotas for
the file system, unlike some other systems, which
require the additional invocation of the command
after the file system has been mounted (see quo‐
taon(1M)). Running does no harm, but it is not
necessary.
Report the list of mounted file systems in the
format.
Prevent the display of error messages
resulting from an attempt to mount already
mounted file systems.
Mount the specified file system as read-only.
This option is equivalent to the specific_option.
Physically write-protected file systems must be
mounted in this way or errors occur when access
times are updated, whether or not any explicit
write is attempted.
Report the regular output with file system type and flags;
however, directory and special fields are
reversed.
Echo the completed command line, but performs no other action.
The command line is generated by incorporating
the user-specified options and other information
derived from This option allows the user to ver‐
ify the command line.
Options (umount)
recognizes the following options:
Attempt to unmount all file systems described in
All optional fields in must be included and sup‐
ported. If is specified, all HFS file systems in
are unmounted. File systems are not necessarily
unmounted in the order listed in
Specify the HFS file system type (see
fstyp(1M)).
Verbose mode. Write a message to standard output indicating
which file system is being unmounted.
Echo the completed command line, but performs no other action.
The command line is generated by incorporating
the user-specified options and other information
derived from This option allows the user to ver‐
ify the command line.
DIAGNOSTICS
complains if the special file is not mounted or if it is busy. The
file system is busy if it contains an open file or some logged-in
user's working directory.
EXAMPLES
Mount a local HFS disk:
Unmount a local HFS disk:
WARNINGS
Some degree of validation is done on the file system, however, it is
generally unwise to mount file systems that are defective, corrupt, or
of unknown origin.
AUTHOR
was developed by HP, AT&T, the University of California, Berkeley, and
Sun Microsystems.
FILES
Static information about the file systems
Mounted file system table
SEE ALSOfsadm_hfs(1M), fsclean(1M), mkfs_hfs(1M), mount(1M), quotaon(1M),
mount(2), fstab(4), mnttab(4), fs_wrapper(5), quota(5), disk(7).
STANDARDS CONFORMANCEmount_hfs(1M)
