Switch the status of Pre-OS between Enable and Disable by clicking Enable/Disable Pre-OS under the tools page. The name of the button depends on the current status of Pre-OS. If Pre-OS is currently enabled, the button will be Disable Pre-OS.
Once the Pre-OS enabled, you will get a boot menu which has our product listed. Select it and you can use our product before Windows starts to load.
Pre-OS can be considered as a simple OS environment, in which you can use our product without system login or a system emergency disk. It is useful in various cases, especially when the operating system fails to boot. Logging into the Pre-OS environment and recovering from a previous image will resolve the problem easily.