Int 21 Fn 4405  U - Xdisk V3.31 - ???                                      [d]

   AX = 4405h
   BL = drive number (00h = default, 01h = A:, etc)
   CX = number of bytes to write
   DS:DX -> buffer containing version string
   ???

Return: CF clear if successful
       AX = number of bytes actually transferred
   CF set on error
       AX = error code (01h,05h,06h,0Dh) (see #1366 at AH=59h/BX=0000h)
Program: xDISK is a shareware resizeable EMS RAMdisk by FM de Monasterio

See Also: AX=4404h"xDISK",INT 2F/AH=DDh/BX=7844h"xDISK"