Return Boot Catalog (Fn 4Dh); Table 28 - Cd Command Packet - Western Digital T13/2132-D User Manual

T13/2132-D Revision 3

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
Carry Set Function completed with an error
Offset Type
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.
64
AH Shall be cleared to zero
AH Shall be set to the error code
Table 28 — CD Command Packet
Working Draft Enhanced Disk Drive - 4 (EDD-4)
Description
June 23, 2010