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June 23, 2010 T13/2132-D Revision 3
Working Draft Enhanced Disk Drive - 4 (EDD-4) 61
14-15 Word Sector Count. This field is only used for booting (INT 13h FN 4Ch). The sector count is the
number of emulated sectors to load, starting at the load segment (see offset 12-13) during the
initial boot procedure.
16 Byte This shall match the value returned in CH when INT 13h FN - 8h is invoked. This field is Bits
0-7 of the cylinder count.
17 Byte This shall match the value returned in CL when INT 13h FN - 8h is invoked. This field contains
the number of sectors per track in bits 0-5 and the high order 2 bits (bits 8 and 9) of the cylinder
count
18 Byte This shall match the value returned in DH when INT 13h FN - 8h is invoked. This field contains
the number of heads.
Table 27 — CD Specification Packet
Offset Type Description