4.2.2.1.1.1. IBM Partition Table
Offset  Length  Contents
----------------------------------------------------------------------------
000h	446	Boot loader code
1BEh	16	Partition 1
1CEh	16	Partition 2
1DEh	16	Partition 3
1EEh	16	Partition 4
1FEh	2	Magic (0AA55h)

Offset  Length  Contents
----------------------------------------------------------------------------
00h	1	Bootable flag
01h	1	Starting head number
02h	2	Starting sector and track
04h	1	System ID
05h	1	Ending head number
06h	2	Ending sector and track
08h	4	Starting sequential sector number
0Ch	4	Length in sequential sectors