Abstract: A computer system, a control method thereof and a recording medium storing a computer program thereof are provided to recover a program efficiently and be resistant to viruses, worms, and user error. The control method of computer system receives a user's request for a recovery of a program which is installed in a first storage unit. A file system of a second storage unit is determined which stores therein a recovery program corresponding to the program for which the recovery is requested. The recovery program is read from the second storage unit with reference to the determined file system, and the program in the first storage unit is recovered by using the read recovery program.

Abstract: A computer system, a control method thereof and a recording medium storing a computer program thereof are provided to recover a program efficiently and be resistant to viruses, worms, and user error. The control method of computer system receives a user's request for a recovery of a program which is installed in a first storage unit. A file system of a second storage unit is determined which stores therein a recovery program corresponding to the program for which the recovery is requested. The recovery program is read from the second storage unit with reference to the determined file system, and the program in the first storage unit is recovered by using the read recovery program.

Abstract: A shelf for a showcase in which a roller unit is formed with holding grooves on both sides of a bottom surface of a U-shaped roller plate. Fixing frames coupled with the roller plate include a bottom part, formed with a vertical rib to be fitted into the holding groove of the roller plate, and a vertical wall surrounding an outside of the roller plate and formed with a horizontal rib closing opened parts of fitting grooves of the roller plate, so that the fixing frames are mounted on both sides of the roller plate of the roller unit in pair correspondingly to each other. The vertical walls are formed with screw-coupling holes at front and rear ends in accordance with screw holes punched at both side walls of the end caps so as to be integrally coupled together by coupling screws.

Abstract: A storage medium storing a master boot record, a computer system having the same, and a booting method of the computer system, the storage medium including: a first sector to store a first master boot record including an execution code for grasping command information and implementing a preset control according to the command information; a first data storage region to store a first data file for booting; a second sector to store a second master boot record to implement booting based on the first data file; a second data storage region to store a second data file for booting; and a third sector to store a third master boot record to implement booting based on the second data file.

Abstract: Disclosed herein are a speaker for mobile terminals which has a slim structure and has a wide frequency characteristic and an excellent high frequency distortion characteristic, thus accomplishing an excellent sound quality, and a method of manufacturing the speaker.