BIOS / Int / Int 13 / 03

                  INT 13 - DISK - WRITE SECTORS FROM MEMORY

Input			Output
AX	03h	Hash Sectors	Status	Sectors Written	AX
					BX
CX	Track Number	Sector			CX
DX	Head	Drive			DX
ES:BX	Buffer Address		Set if Error		CF

    For hard disks, the top 2 bits in CL are bits 8 & 9 of the track number.

Status: See function 01h