The umount command in Linux explained
The umount command detaches a mounted drive safely (the command is spelled umount). It is one of the most useful commands for anyone using a live USB drive or a fresh Linux install.
Syntax
sudo umount folder-or-device
Examples
sudo umount /mnt: detach the drive so it is safe to remove
Tip
Always unmount before unplugging to avoid losing data.
Keep learning
New to the terminal? Start with Linux terminal basics. You can try every command safely from a live session: see how to try Linux without installing it. Run man umount in a terminal for the full manual.
Frequently asked questions
How do I see every option for umount?
Run man umount for the full manual, or try umount --help for a short summary.
Do I need sudo to run umount?
Usually yes, for manual unmounting.
Is it safe to practise umount on a live USB drive?
Mostly yes, because a live session starts fresh each time. Be careful with commands that write to your internal disk, such as rm on a mounted drive or dd.