boot sector

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boot sector

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.
References in periodicals archive ?
Using Steganos AntiVirus 2006, the computer is protected from script, macro, dam, bootsector, polymorphous, ActiveX and Java viruses.
Individuals and companies such as Rizzo and Bootsector who buy used hardware and software for resale are, therefore, prohibited from selling or licensing Wang's VS software.
The virus loads its disk into memory and makes itself memory resident, then loads the original bootsector into memory and transfers control that way, not even the operating system notices the presence of the virus.