What is Master Boot Record (MBR) ?

The Master Boot Record (MBR) is a small program that resides in the first sector of a hard disk drive or other storage device. It contains the boot loader, which is responsible for loading the operating system (OS) into memory and starting its execution.

During the installation of an OS, the process typically involves partitioning the storage device and creating one or more partitions on it. The MBR is typically written to the first sector of the storage device, which includes information about the partitions on the device and the location of the boot loader for the OS.

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