<s>
Distribution	B-Device
Media	I-Device
Format	I-Device
(	O
DMF	O
)	O
is	O
a	O
format	O
for	O
floppy	B-Device
disks	I-Device
that	O
Microsoft	O
used	O
to	O
distribute	O
software	O
.	O
</s>
<s>
As	O
a	O
side	O
effect	O
,	O
utilities	O
had	O
to	O
specially	O
support	O
the	O
format	O
in	O
order	O
to	O
read	O
and	O
write	O
the	O
disks	O
,	O
which	O
made	O
copying	O
of	O
products	O
distributed	O
on	O
this	O
medium	B-General_Concept
more	O
difficult	O
.	O
</s>
<s>
An	O
Apple	O
Macintosh	O
computer	O
running	O
Disk	B-Operating_System
Copy	I-Operating_System
6.3.3	O
on	O
the	O
Mac	O
OS	O
7.6	O
or	O
later	O
operating	O
system	O
can	O
copy	O
and	O
make	O
DMF	O
disks	O
.	O
</s>
<s>
Comparison	O
of	O
DMF	O
and	O
standard	O
1440KB	O
3-inch	O
diskettes	B-Device
:	O
</s>
<s>
DMF	O
in	O
the	O
form	O
of	O
a	O
1680KB	O
Virtual	O
Floppy	B-Device
Disk	I-Device
(	O
VFD	O
)	O
image	O
and	O
IBM	B-Device
Extended	I-Device
Density	I-Device
Format	I-Device
(	O
XDF	O
)	O
images	O
are	O
supported	O
by	O
Windows	B-Application
Virtual	I-Application
PC	I-Application
.	O
</s>
