A master boot record consists of three major pieces: the master partition table, the disk signature, and the master boot code. Here's a simplified version of the role it plays when a computer is ...
The GUID Partition Table (GPT) replaces the previous master boot record (MBR). GPT partitions can hold 18 exabytes compared to 2.2TB for the MBR. GPT supports a "protective" MBR so that third ...