COMPUTER SYSTEM AND METHOD CAPABLE OF SELF-MONITORING AND RESTORING AN OPERATION OF OPERATING SYSTEM

The invention a computer system is disclosed. The computer system comprises a motherboard and a data storage device. The data storage device comprises a controller and a data storage unit. The controller comprises a firmware. The data storage unit comprises a first system storage sector and a second system storage sector. The first system storage sector stores an original operating system, and a monitoring program is installed in the original operating system. The monitoring program periodically sends an indication signal to the controller. The second system storage sector stores a backup operating system. If the controller doesn't receive the indication signal from the monitoring program, the firmware will execute an operating system recovery procedure to recover the original operating system of the first system storage sector by the backup operating system of the second system storage sector.