(plural boot sectors)
- (computing) A dedicated sector usually at the beginning (first sector on first track) of a storage medium that holds special data used to start a system. Some systems use a boot block of several physical sectors, while some use only one boot sector. Other manufacturers use the terms boot block and boot sector interchangeably.
boot sector - Computer Definition
A master boot record, typically located on the initial or boot sector of the hard disk, is a tiny program that runs when a computer boots. To figure out which partition to use for booting, the master boot record starts the boot process by looking up the partition table. The boot process is furthered when it transfers program control to the boot sector of that partition.
See Also: Computer.
Jupitermedia Corporation. Master Boot Record. [Online, April 5, 2004.] Jupitermedia Corporation Website. http://www.webopedia.com/TERM/M/MBR.html.
The first sector on a hard disk and in every disk partition. In a partitioned storage device such as a hard disk, the boot sector contains the "partition table." In a non-partitioned device such as a USB drive, the boot sector contains the "volume boot record" (VBR). See master boot record, partition table, MBR disk, GPT and boot.