# Disable Drives

Teachers can disable USB drives and optical disc drives.

Configuring settings for the *Disable Drives* function will automatically force Student computers to enter *Focus* mode after they have been applied to the class.

{% hint style="info" %}
Students that are in *Focus* mode will be displayed on the Teacher console with a red frame around the thumbnail.
{% endhint %}

Teachers can temporarily remove any restrictions on Student computers through the *Focus* button and selecting *Stop* next to the *Drives* option.

![](https://3433485724-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjFBx1MpmJ5Ym6tYvK1%2Fuploads%2FuTRJ3bp1z68jSyi0dxRv%2FINS_Settings_disable_drives_11.3.jpg?alt=media\&token=1b9a5b73-7276-4207-a6d8-53b989c4f5d1)

1. Click *Disable Drives* from the left-hand menu.
2. Select the drives you wish to disable.
3. Click *Save* or *Save and Apply*.

{% hint style="danger" %}
On macOS, this action is not possible if: 

* A removable drive is used to start up the computer, or 
* The user has open documents on the removable drives when it is being disabled. The documents must be closed first.
  {% endhint %}