Storage medium storing master boot record, computer system having the same and booting method of the computer system

A computer system comprising:

• a user selection unit to receive a user selection signal;
• and
• a storage medium comprising:
• a first data storage region storing a first operating system,
• a second data storage region storing a second operating system different from the first operating system,
• a first sector storing a first master boot record including an execution code to allow a controller to grasp command information and a first partition table to allow booting based on the first operating system, the first partition table being set as partition information of the first operating system and being set as a first active partition of the storage medium,
• a second sector storing a second master boot record including a first boot code to implement booting based on the first operating system, and
• a third sector storing a third master boot record to implement booting based on the second operating system and a second partition table to allow booting based on the second operating system, the second partition table being set as partition information of the second operating system and being set as a second active partition of the storage medium,
• wherein the controller selectively controls the first operating system or the second operating system to be booted according to the user selection signal.

A booting method of a computer system comprising a first operating system using a first master boot record and a second operating system using a second master boot record different from the first master boot record, the booting method comprising:

• determining whether a user selection signal is received for selectively booting either the first operating system or the second operating system;
• selectively loading the first master boot record or the second master boot record according to whether the user selection signal is received;
• and
• booting the first operating system or the second operating system according to the loaded master boot record,
• wherein the first master boot record includes a first partition table and an execution code to boot the first operating system, the first partition table being set as partition information of the first operating system and being set as a first active partition of the storage medium,
• wherein the second master boot record includes a first boot code to boot the second operating system, and
• wherein the computer system comprises a third master boot record including a second boot code to boot the first operating system and a second partition table to boot the first operating system, the second partition table being set as partition information of the second operating system and being set as a second active partition.