System restore method and apparatus using virtualization

PURPOSE: A system restoring method and a device using visualization are provided to enable a user to continuously use the system without log-off for the system restore. CONSTITUTION: A storage layer(130) stores a plurality of restore points. An application layer(110) requests the system use. The application layer requests the system restore in the point of the target restore among a plurality of restore points. When the system restore is requested, an operating system layer(120) generates a visualization layer. When the system use is requested, the OS layer performs the system restore at the point of the target restore using the visualization layer.