# Mount removable storage devices as read-only

Prevent users from writing or modifying files on removable storage devices (i.e. flash disks, mobile phones, cameras).

- Type: dconf
- Key: /org/gnome/desktop/lockdown/mount-removable-storage-devices-as-read-only
- Default: false

Note: default system value is used for "Not Configured" and enforced if "Disabled".

Supported on Ubuntu 20.04, 22.04, 24.04, 24.10, 25.04.



<span style="font-size: larger;">**Metadata**</span>

| Element      | Value            |
| ---          | ---              |
| Location     | User Policies -> Ubuntu -> Desktop -> Shell -> LockDown -> Mount removable storage devices as read-only    |
| Registry Key | Software\Policies\Ubuntu\dconf\org\gnome\desktop\lockdown\mount-removable-storage-devices-as-read-only         |
| Element type | boolean |
| Class:       | User       |