Western Digital T13/2132-D - Manual (Page 76)

T13/2132-D Revision 3 June 23, 2010
64 Working Draft Enhanced Disk Drive - 4 (EDD-4)
8.25 Return Boot Catalog (FN 4Dh)
This function returns the Boot Catalog from the CD or DVD media. See clause 7 for a description of the Boot
Catalog.
Entry
AH 4Dh
AL 00h
DS:SI Pointer to empty CD Command Packet (see table 28)
Exit
Carry Clear Function completed without error
AH Shall be cleared to zero
Carry Set Function completed with an error
AH Shall be set to the error code
Table 28 — CD Command Packet
Offset Type Description
0 Byte 8 (e.g., Packet size in bytes)
1 Byte Sector count. Number of sectors in the boot catalog to transfer
2-5 DWord Pointer to the buffer where the boot catalog shall be stored
6-7 Word Beginning sector to transfer. This number shall be relative to the start of the boot catalog.
This value shall be cleared to zero to retrieve the first sector.