Select the Encrypt used disk space only check box if you want Kaspersky Endpoint Security to encrypt only those disk sectors that are occupied by files.
If you are applying encryption on a drive that is already in use, it is recommended to encrypt the entire drive. This ensures that all data is protected - even deleted data that might still contain retrievable information. The Encrypt used disk space only function is recommended for new drives that have not been previously used.
If a device was previously encrypted using the Encrypt used disk space only function, after applying a policy in Encrypt entire removable drive mode, sectors that are not occupied by files will still not be encrypted.
In the Actions for devices that were selected earlier drop-down list, select the action to be performed by Kaspersky Endpoint Security according to encryption rules that had been previously defined for removable drives:
If you want the previously created encryption rule for the removable drive to remain unchanged, select Skip.
If you want a previously created encryption rule for a removal drive to be replaced by the new rule, select Update.
Lines containing the parameters of the created encryption rules appear in the Custom rules table.
Click OK to save changes.
The added removable drive encryption rules are applied to removable drives that are connected to any computers controlled by the modified policy of Kaspersky Security Center.