The mount command mounts a storage device or filesystem, making it accessible and attaching it to an existing directory structure. The umount command “unmounts” a mounted filesystem, informing the system to complete any pending read or write operations, and safely detaching it.

What is mounting and unmounting?

When you mount a file system, any files or directories in the underlying mount point directory are unavailable as long as the file system is mounted. … These files are not permanently affected by the mounting process, and they become available again when the file system is unmounted.

What does mount command do?

Overview. The mount command instructs the operating system that a file system is ready to use, and associates it with a particular point in the overall file system hierarchy (its mount point) and sets options relating to its access. … A file system can be defined as user mountable in the /etc/fstab file by the root user.