Computer data storage device with data recovery function and control method thereof

A computer data storage device that is connected to a host computer and stores data, the computer data storage device comprising:

• a host interface that communicates with the host computer;
• a storage unit that includes a user area and a security area;
• a user input/output unit that receives input regarding an operation mode of the computer data storage device, that is, a normal mode and a management mode, and related information thereof from a user and displays the input and the related information;
• and
• a control unit that is connected to the host interface, the storage unit, and the user input/output device to control the operation mode,
• wherein the control unit is configured to, when the host computer attempts to change a structure of the user area, generate recovery information for preserving data stored in the user area and store the recovery information in the security area, and
• the user area allows the host computer to freely change a structure of the user area, and
• the security area, in a normal mode, precludes structure change by the host computer and allows reading, and in a management mode, allows structure change by the host computer.