Boot Sector

The boot sector is a dedicated section of a hard disk or other storage device that contains data used to boot a computer system. It includes the master boot record (MBR), which is accessed during the boot sequence.

The boot sector is typically located at the very beginning of a disk, before the first partition. It includes the partition map, which identifies all the partitions on the disk. It also defines which partition contains the startup data (such as the operating system). This lets the computer know which partition to access when starting up. Therefore, if a disk's boot sector becomes corrupted or contains invalid data, the computer may not be able to start up from the disk. If this happens, you should run a disk utility or antivirus program to try and fix the problem.

Updated July 30, 2009 by Per C.

quizTest Your Knowledge

Which of the following is an example of a CAN network?

A bluetooth network between smartphone and smartwatch
A home network with multiple wireless devices
A university network created for students
A company network that spans multiple buildings
Correct! Incorrect!     View the CAN definition.
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