Overview

When running Windows 8 users who have configured the operating sytstem to be protected  by Deep  Freeze may find that the operating system will not allow them to boot an operating system other than the default one. This occurs due to changes in the Windows 8 boot loader that effectively require Deep Freeze to protect the operating system at this stage preventing users from changing the boot device.

Solution

This can be resolved by setting the computer to use the older style of boot loader by running the following commnad;

 bcdedit /set {default} bootmenupolicy legacy

To revert this change run the command below;

    bcdedit /set {default} bootmenupolicy standard