BOOT BLOCK
\bˈuːt blˈɒk], \bˈuːt blˈɒk], \b_ˈuː_t b_l_ˈɒ_k]\
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A program on a hard disk, floppy diskor other media, which is loaded when the computer is turned onor rebooted and which controls the next phase of loading theactual operating system. The loading and execution of theboot block is usually controlled by firmware in ROM orPROM. It may be at some fixed location possibly or may bepointed to by the master boot record.
By Denis Howe
