Mount Options Description

async
Data is read and written asynchronously.

atime
The inode associated with each file is updated each time the file is accessed.

auto
Searches through /etc/filesystems for the appropriate format for the partition; normally associated with a    floppy or removable drive.

defaults
Uses default mount options rw, suid, dev, exec, auto, nouser, and async.

dev
Permits access to character devices such as terminals or consoles and block devices such as drives.

exec
Allows binaries (compiled programs) to be run on this filesystem.

noatime
The inode associated with each file is not updated when accessed.

noauto
Requires explicit mounting. Common option for CD and floppy drives.

nodev
Devices on this filesystem are not read or interpreted.

noexec
Binaries (compiled programs) cannot be run on this filesystem.

nosuid
Disallows setuid or setgid permissions on this filesystem.

nouser
Only root users are allowed to mount the specified filesystem.

remount
Remounts a currently mounted filesystem. Also an option for the mount command.

ro
Mounts the filesystem as read-only.

rw
Mounts the filesystem as read/write.

suid
Allows setuid or setgid permissions on programs on this filesystem.

sync
Reads and writes are done at the same speed (synchronously) on this filesystem.

user
Allows nonroot users to mount this filesystem. By default, this also sets the noexec, nosuid, and nodev options.


There are more options available, including noatime, noauto, nodev, noexec, nosuid, and nouser, which are the opposites of atime, auto, dev, exec, suid, and user, respectively.

You can find out more from the mount manual, which you can read by running the following command:

# man mount

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