Deep Freeze Restore PC Boot: What It Does

Deep Freeze can restore your PC to its original state on reboot, which means any changes made during a session are discarded when the computer restarts. This is a common setup in schools, libraries, and internet cafes to keep systems clean and functional. The short answer is yes, Deep Freeze is designed to restore your PC on boot, but there are important details about how it works and how to manage it.

What Is Deep Freeze?

Deep Freeze is a proprietary system-restore software by Faronics that freezes the system partition. When enabled, it redirects writes to a temporary overlay, so the underlying operating system remains unchanged. On restart, the overlay is discarded, and the system returns to the exact state it was in when you froze it. This is not the same as a system restore point or a backup; it is a continuous, automatic reset mechanism.

How Deep Freeze Works on Boot

When your PC boots with Deep Freeze enabled, the software loads a driver that intercepts all write operations to the hard drive. Instead of writing directly to the system partition, it writes to a temporary space (the overlay). On shutdown or restart, the overlay is emptied, and the original data is preserved. This means any files saved, settings changed, or software installed during the session are lost unless you use the “Thawed” mode or the “Preserve” feature.

Key points about the boot process:

Deep Freeze must be installed and configured before freezing. You typically freeze the system after installing the OS and all necessary software.
When frozen, the boot process loads the OS normally, but all writes are redirected.
If the system is in a Thawed state, changes are permanent until you freeze it again.
You can schedule restarts to thaw temporarily for updates, then refreeze automatically.

How to Enable or Disable Deep Freeze

You control Deep Freeze through its password-protected interface. To make changes permanent, you must temporarily disable the frozen state:

Open the Deep Freeze tray icon (usually a blue or red polar bear).
Hold Shift and double-click the icon to open the login window.
Enter your password and choose “Boot Thawed” or “Restart Thawed” to allow changes.
Make your updates, then repeat the process and select “Boot Frozen” to re-enable protection.

If you forget the password, you can use the Faronics Deep Freeze uninstall utility, but that often requires a specific procedure and may not be available on all systems.

Common Problems and Misconceptions

One common misconception is that Deep Freeze protects against malware or viruses. It does not; it only reverts changes on reboot. Malware can still run during a session and potentially steal data or use resources. Another issue is that users may lose important work if they forget to save outside the frozen partition. Also, if the system crashes or loses power, the overlay may become corrupted, leading to boot issues. In such cases, you might need to repair the installation or restore from a backup.

Another problem is that Deep Freeze can interfere with Windows updates. Since updates write to the system partition, they are reverted on reboot. You must thaw the system to install updates, then refreeze. Some IT administrators schedule this during maintenance windows.

Choosing Between Deep Freeze and Alternatives

Deep Freeze is not the only option. Alternatives include:

Windows built-in features like System Restore (which is not automatic on every reboot).
Steadier State (a similar Faronics product) or Reboot Restore Rx (a free alternative).
Using a virtual machine or disk imaging tools like Clonezilla to reset the system manually.

Deep Freeze is more convenient for environments with many users and no IT staff on site, but it costs money per license. Free alternatives may lack some features like network management or scheduled thawing.

Cost and Licensing

Deep Freeze is commercial software. Pricing is per workstation, with volume discounts for educational institutions. There is no free version, but Faronics offers a trial. For a single PC, the cost might be around $50, but prices vary. Always check the official Faronics website for current pricing.

Safety and Data Loss Considerations

Using Deep Freeze does not protect against hardware failure or accidental deletion of files on other partitions. It only affects the frozen partition. If you need to keep user data, you must store it on a separate drive or partition that is not frozen. Also, if you are using Deep Freeze on a laptop, be aware that hibernation can cause issues because the hibernation file is written to the system partition and then reverted, so the system may not resume correctly. It is recommended to disable hibernation or use sleep instead.

Frequently Asked Questions

Does Deep Freeze work on SSDs?

Yes, Deep Freeze works on SSDs, but it may reduce the lifespan of the drive because of the constant write operations to the overlay. However, modern SSDs have wear leveling, and the impact is minimal for typical use.

Can I keep files after a reboot?

Yes, if you save files to a non-frozen partition or use the “Preserve” feature to keep specific files or folders in the overlay. You can configure this in the Deep Freeze settings.

How do I update Windows if Deep Freeze is on?

You must temporarily thaw the system, install updates, restart, and then refreeze. Alternatively, you can use the “Maintenance Mode” feature that allows updates to be applied during a specific time window.

Is Deep Freeze safe for home use?

It can be, but it is generally overkill for a home PC. If you want to test software or let children use the computer without making permanent changes, it can be useful. However, you must be careful to save important files to an external drive or cloud storage.

What happens if I uninstall Deep Freeze?

Uninstalling Deep Freeze requires entering the password and then running the uninstaller. After uninstalling, the system returns to normal, and changes are permanent. The current session’s changes are kept, but the overlay is removed.

Conclusion

Deep Freeze is a powerful tool for maintaining a consistent system state across reboots. It is not a security solution or a backup, but it is excellent for public or shared computers. Understanding how it works and its limitations helps you decide if it is right for your situation.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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