Faronics Data Igloo Standard - Manual (Page 35)

Registry Key Redirection
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Data Igloo User Guide
7. Reboot the computer Frozen.
Changes made to the configuration are applied only when the computer
restarted. Registry key redirection takes effect only when the computer is
rebooted Frozen.
Select the specific registry key to be redirected. Selecting the parent registry
key removes the child registry key from the list.
Deep Freeze status must be Thawed to change the settings in the Registry Key
Redirection tab. Registry key redirection can also be enabled when the Deep
Freeze status is Frozen. However, registry key redirection will not take effect
when the computer is rebooted.