Make sure you don't forget it because there's no way of getting it back. You need to set up a master password that can activate and deactivate Deep Freeze. And unfortunately, enabling or disabling Deep Freeze will always require a restart. write and save an important document, install a licensed software), you will lose everything at the next startup. How it worksīe careful though, if you forget the program on (on frozen mode) and then make some important changes (e.g. Simply put, when Deep Freeze is activated, it will restore all initial settings of your computer at the next startup. This kind of tool is recommended when you really don't want anyone else making some uncalled modifications to your virtual system. Deep Freeze is a backup and recovery system that can disable all changes made to the operating system of computer, at the next reboot.