---
name: "umount.crypt"
section: "8"
platform: "linux"
package: "pam_mount"
version: "2.23-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/umount.crypt/8"
---

# umount.crypt(8)

unmount a dm-crypt encrypted volume

## Name

umount.crypt - unmount a dm-crypt encrypted volume

## Syntax

**umount.crypt** \[**-n**\] *directory*

## Options

- **-f**

  This option is ignored (originally is "force unmount for NFS").

- **-n**

  Do not update /etc/mtab.

- **-r**

  Try mounting read-only if unmounting fails. This option is currently not implemented and is ignored.

## Description

umount.crypt will unmount *directory* and disassociates the underlying crypto device, and loop device if such was used.