# info > mount --- type: CommandReference command: mount mode: man section: 8 source: man-pages --- ## Quick Reference - `mount` — list all mounted filesystems - `mount -t type device dir` — mount a filesystem - `mount -a` — mount all filesystems from /etc/fstab - `mount --bind olddir newdir` — bind mount a subtree - `mount --move olddir newdir` — move a mounted tree - `mount -o remount,rw /dir` — remount a filesystem read-write - `mount -o loop file dir` — mount a file as a loop device - `mount -U uuid dir` — mount by UUID ## Name mount — mount a filesystem ## Synopsis mount [-h|-V] mount [-l] [-t fstype] mount -a [-fFnrsvw] [-t fstype] [-O optlist] mount [-fnrsvw] [-o options] device|mountpoint mount [-fnrsvw] [-t fstype] [-o options] device mountpoint mount --bind|--rbind|--move olddir newdir mount --make-[shared|slave|private|unbindable|rshared|rslave|rprivate|runbindable] mountpoint ## Options ### General - `-a, --all` — mount all filesystems in /etc/fstab (except noauto) - `-B, --bind` — bind mount a subtree - `-c, --no-canonicalize` — do not canonicalize paths - `-f, --fake` — dry run, everything except the system call - `-F, --fork` — fork for each mount (with -a, parallel) - `-i, --internal-only` — do not call mount helper - `-L, --label` — mount by label - `-l, --show-labels` — add labels to mount output - `-M, --move` — move a mounted tree - `-n, --no-mtab` — do not write to /etc/mtab - `-N, --namespace` — perform mount in given namespace - `-O, --test-opts` — limit filesystems to those with given options - `-o, --options` — mount options (comma-separated list) - `--options-mode` — how to combine fstab vs command-line options (ignore, append, prepend, replace) - `--options-source` — where to read default options (fstab, mtab, disable) - `--options-source-force` — always read fstab even if device and dir specified - `-R, --rbind` — recursive bind mount - `-r, --read-only` — mount read-only - `-s` — tolerate sloppy mount options - `--source` — explicitly specify the device argument - `--target` — explicitly specify the mountpoint argument - `--target-prefix` — prepend directory to all mount targets - `-T, --fstab` — alternative fstab file - `-t, --types` — filesystem type(s) - `-U, --uuid` — mount by UUID - `-v, --verbose` — verbose mode - `-w, --rw, --read-write` — mount read-write - `-V, --version` — display version - `-h, --help` — help ### Filesystem-Independent Mount Options - `async` / `sync` — asynchronous or synchronous I/O - `atime` / `noatime` / `relatime` / `strictatime` / `lazytime` — access time behavior - `auto` / `noauto` — whether mount -a includes this filesystem - `context=`, `fscontext=`, `defcontext=`, `rootcontext=` — SELinux contexts - `defaults` — rw, suid, dev, exec, auto, nouser, async - `dev` / `nodev` — interpret block/char devices - `diratime` / `nodiratime` — directory access time updates - `dirsync` — synchronous directory updates - `exec` / `noexec` — permit execution of binaries - `group` — allow mount if user in group of device - `iversion` / `noiversion` — inode version field - `mand` / `nomand` — mandatory locks - `_netdev` — network-attached device - `nofail` — do not report errors if device missing - `owner` — allow mount if user owns device - `remount` — remount an already-mounted filesystem (change options) - `ro` / `rw` — read-only / read-write - `suid` / `nosuid` — honor set-user-ID bits - `silent` / `loud` — error reporting - `user` / `nouser` / `users` — who can mount/unmount - `X-*` / `x-*` — application-specific options (X-* not stored, x-* stored) - `X-mount.mkdir` — create mountpoint directory if missing - `nosymfollow` — do not follow symlinks during path resolution ### Bind/Move/Propagation - `--bind` / `--rbind` — bind mount (recursive with --rbind) - `--move` — move a mount tree - `--make-shared` / `--make-slave` / `--make-private` / `--make-unbindable` — set propagation type - `--make-rshared` / `--make-rslave` / `--make-rprivate` / `--make-runbindable` — recursive propagation ### Loop Device - `loop=/dev/loopN` — specify loop device - `offset=N` — start offset in file - `sizelimit=N` — maximum size of loop device ### Verity (dm-verity, experimental) - `verity.hashdevice=path` — hash tree device - `verity.roothash=hex` — root hash - `verity.roothashfile=path` — file containing root hash - `verity.hashoffset=offset` — offset if hash embedded in source - `verity.fecdevice=path` — FEC device (optional) - `verity.fecoffset=offset` — FEC offset - `verity.fecroots=value` — parity bytes (default 2) - `verity.roothashsig=path` — PKCS#7 signature of root hash ## Examples shell # Mount a filesystem by device mount /dev/sda1 /mnt # Mount by UUID mount -U "a1b2c3d4-..." /mnt # Bind mount mount --bind /olddir /newdir # Remount read-only mount -o remount,ro /mnt # Mount all filesystems from /etc/fstab mount -a # Mount a file as a loop device mount /tmp/disk.img /mnt -o loop # Mount a network filesystem mount -t nfs server:/export /mnt # Create a read-only bind mount mount --bind /olddir /newdir mount -o remount,bind,ro /olddir /newdir ## See Also - [mount(2)](http://localhost/phpMan.php/man/mount/2/markdown) - [umount(2)](http://localhost/phpMan.php/man/umount/2/markdown) - [fstab(5)](http://localhost/phpMan.php/man/fstab/5/markdown) - [filesystems(5)](http://localhost/phpMan.php/man/filesystems/5/markdown) - [nfs(5)](http://localhost/phpMan.php/man/nfs/5/markdown) - [xfs(5)](http://localhost/phpMan.php/man/xfs/5/markdown) - [mount_namespaces(7)](http://localhost/phpMan.php/man/mount_namespaces/7/markdown) - [findmnt(8)](http://localhost/phpMan.php/man/findmnt/8/markdown) - [losetup(8)](http://localhost/phpMan.php/man/losetup/8/markdown) - [lsblk(8)](http://localhost/phpMan.php/man/lsblk/8/markdown) - [umount(8)](http://localhost/phpMan.php/man/umount/8/markdown) ## Exit Codes - `0` — success - `1` — incorrect invocation or permissions - `2` — system error (out of memory, cannot fork, no more loop devices) - `4` — internal mount bug - `8` — user interrupt - `16` — problems writing or locking /etc/mtab - `32` — mount failure - `64` — some mount succeeded (only with `mount -a`)