Master Boot Records and Partition Tables

Table of Contents

1 Master Boot Record

The first 512 bytes of a computer disk is for the master boot record and partition table.

master-boot-record.png

2 Master Boot Code

The first 446 bytes of the MBR contain the boot code—code like the first stage of GRUB boot loader that allows you to load an operating system.

3 Partition Table

The final 66 bytes contain a 64-byte partition table and a 2-byte signature.

Author: Bernt Hansen

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