BIOS / Int / Int 13 / 0C

           INT 13 - FIXED DISK - SEEK TO CYLINDER (XT,AT,XT286,PS)

Input			Output
AX	0Ch		Status	AX
BX				BX
CX	Cylinder	Cyl hi 2 bits		CX
DX	Head	Drive		DX
ES:DI			Set if Error	CF

        The top 2 bits in CL are bits 8 & 9 of the cylinder number.

Status: See function 01h