INT 13 - HARD DISK - SEEK TO CYLINDER                                           
	AH = 0Ch
	CH = low eight bits of cylinder number
	CL = sector number (bits 5-0)
	    high two bits of cylinder number (bits 7-6)
	DH = head number
	DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
	CF clear if successful
	AH = status (see #00234)
SeeAlso: AH=00h,AH=02h,AH=0Ah,AH=47h