Int 2F Fn 1207  U - DOS 3+ Internal - Make Disk Buffer Most-recently Used  [D]

   AX = 1207h
   DS:DI -> disk buffer

Return: nothing
Desc:  move the indicated buffer to the end of the disk buffer chain (least-
     recently used is first); under DOS 3.3, the buffer is then moved to
     the start of the disk buffer chain if it was marked unused

Notes: can be called only from within DOS
   this function is nearly the same as AX=120Fh

See Also: AX=120Fh