Western Digital T13/2132-D - Manual (Page 52)

T13/2132-D Revision 3 June 23, 2010
40 Working Draft Enhanced Disk Drive - 4 (EDD-4)
8.12 Park Heads (FN 19h)
This function shall be used to park the device heads.
Entry
AH 19h
DL BIOS device number
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