Knowledgebase
Deep Freeze & Windows 8 - Support for Fast Startup
Posted by Adam Zilliax on 14 December 2012 06:22 AM

Overview

Windows 8 introduced a new feature called "Fast Startup". This feature is disabled by Deep Freeze when Deep Freeze is installed on a client workstation running Windows 8. Enabling this feature will lead to workstations not shutting down when Deep Freeze is installed. 

Details

Fast Startup utilizes hibernation to boot the computer faster without completely shutting down the computer. Windows does this by saving system info to a file upon shutdown. When you start your PC again, Windows uses that system info to resume your PC instead of restarting it. 

You will not experience the benefits of Deep Freeze if the machine were to hibernate. Deep Freeze automatically disables Fast Startup upon installation.
Resolution / Workaround

Deep Freeze 7.6 will automatically disable the "Fast Startup" feature during install or upgrade. 

Background

The hibernation and Fast Startup feature of Windows both work in a similar manner. Both save a copy of the system state to the hard disk to either allow you to return to a given state after powering the computer off, or to speed up the boot of the system by skipping ahead of a lot of the normal startup process. This hibernation file is written to the the disk and cannot be exempted from Deep Freeze's protection, if the system where allowed to hibernate any changes to the hibernation file would be lost after the machine shut down resulting in loss of any data that was not saved to a thawed location. To prevent this loss of data Deep Freeze will block workstations from hibernating.

As the Fast Startup feature of Windows 8 uses the same methods as Hibernation it is also impacted by the methods used to disable hibernation.

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