



Deep Freeze cannot protect the operating system and hard drive upon which it is installed if the computer is booted from another medium (such as another bootable partition or internal hard drive, an external hard drive, a USB device, optical media, or network server). In such cases, a user would have real access to the contents of the (supposedly) frozen system.[3] This scenario may be prevented by configuring the CMOS (nonvolatile BIOS memory) on the workstation to boot only to the hard
drive to be protected, then password-protecting the CMOS. This is a normal precaution for most public access computers.[citation needed] A further precaution would be to lock the PC case shut with a physical lock or tiedown cable system to prevent access to motherboard jumpers. Failure to take such precautions can compromise the protection provided by the software.
Deep Freeze can protect hard drive partitions of larger than 2 TB capacity (using NTFS).

