Using Deep Freeze Configuration Administrator : Drives Tab : Always Thaw External Hard Drives

Always Thaw External Hard Drives
The Always Thaw External Hard Drives pane has two check boxes, USB and IEEE 1394 (FireWire) and both check boxes are selected by default. This ensures that the USB or IEEE 1394 (FireWire) hard drives are always Thawed.
If the USB and/or IEEE 1394 (FireWire) external hard drives check boxes are cleared, the drive is Frozen or Thawed according to the letter each drive mounts to in the Frozen Drives section.
Network drives and removable media drives (floppy, memory keys, CD-RW, etc.) are not affected by Deep Freeze and therefore cannot be Frozen.
 
Example
In the above screen, drives E: and F: are selected in the Frozen Drives pane.
Let us assume that E: corresponds to a USB hard drive and F: corresponds to an IEEE 1394 (FireWire) hard drive.
The USB and IEEE 1394 (FireWire) check boxes are selected in the Always Thaw External Hard Drives pane, the external hard drives would be Thawed.
The USB check box is selected. The IEEE 1394 (FireWire) check box is cleared. In this example, the USB drive (D:) would be Thawed and the IEEE 1394 (FireWire) drive (F:) would be Frozen.