The Retain existing Thawspace check box is selected by default to prevent ThawSpaces created during previous installations from being deleted.
A dialog is always displayed asking if the ThawSpace should be retained or deleted during an Attended Uninstall, regardless of whether Retain existing ThawSpace has been selected. This option is not displayed if the uninstall is performed through the Enterprise Console.
The Honor Group Policy settings for Hidden Drives ensures that the Group Policy settings for hidden drives do not conflict with the Deep Freeze settings for hidden drives.