The hard disk boot record (MBR) does not belong to any operating systems.
Therefore, it cannot be read by disk command.
Fortunately, it can be read by INT13H provided by ROM-BIOS or DISKEDIT.DXE provided by Norton 8.0.
The master boot program is responsible for loading and running the system.
MBR and Hard Drive Partition
Hard disk is comprised of sectors and several sectors constitute a partition.
The boot record of logical drive is chained.
Eachlogical partitionhas an extended boot record (EBR) which is similar to the MBR structure.
Linux operating system will name the partition as sda1-sda4 or hda1-hda4.
(Note: the letter a represents the hard disk serial number).
Besides, the GPT partitioning scheme can improve the integrity of data structure since it provides backup-partition-table feature.
