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Format of hard disk master boot sector

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Offset Size Description

00h

446 BYTEs

Master bootstrap loader code

1BEh

16 BYTEs

partition record for partition 1 (see #00651)

1CEh

16 BYTEs

partition record for partition 2

1DEh

16 BYTEs

partition record for partition 3

1EEh

16 BYTEs

partition record for partition 4

1FEh

WORD

signature, AA55h indicates valid boot block