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  1. Jun 2021
    1. The Master Boot Record (MBR) is a small, dedicated section at the beginning of the hard disk which holds the boot information and partition layout for the whole disk. The MBR itself is only a single physical sector in length (512 bytes), but it is required in order to create or maintain partitions on the disk, or even boot the computer.

      MBR is very important for OS on disk.