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boot block

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boot block

(operating system)
A program at some fixed location on a hard disk, floppy disk or other media, which is loaded when the computer is turned on or rebooted and which controls the next phase of loading the actual operating system. The loading and execution of the boot block is usually controlled by firmware in ROM or PROM.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
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References in periodicals archive
Intel Corp has unveiled the 0.18-micron Advanced+ Boot Block flash memory, the fourth generation of its Boot Block memory family.
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