       IBM   ...

1.     .   3.5" -    (
,    ).
2.   DOS  DZMY.       800.COM
     ,     -
 .        ...   -
 DR-DOS  7  ;-)
3. F9 -  . MY - 80 , MZ - 40  (DZ 
).    .
4.  EM.COM ( , ) . :
   em.com sample.rk obraz.dsk a:
 sample.rk - em0:
    obraz.dsk - em1:
    a: - em2:
5.      ( ):
     set em1 size=800.
     set em2 size=800.
   40  
     set em1 size=1600.
     set em2 size=1600.
   80 . 
6. :
     copy/dev/ver/noq em1: em2:

          ,     - 
       .