Int 13 Fn 07  - Fixed Disk - Format Drive Starting At Given Track (xt,por  [B]

   AH = 07h
   AL = interleave value (XT only)
   ES:BX = 512-byte format buffer (see AH=05h)
   CH = cylinder number (bits 8,9 in high bits of CL)
   CL = sector number
   DH = head
   DL = drive

Return: AH = status code (see AH=01h)

Note:  AWARD AT BIOS and AMI 386sx BIOS have been extended to handle more
     than 1024 cylinders by placing bits 10 and 11 of the cylinder number
     into bits 6 and 7 of DH

See Also: AH=05h"FIXED",AH=06h"FIXED",AH=1Ah