<s>
The	O
Disk	B-Application
Masher	I-Application
System	I-Application
(	O
.dms	B-Application
)	O
is	O
an	O
often	O
used	O
method	O
on	O
the	O
Amiga	B-Device
,	O
to	O
create	O
a	O
compressed	B-General_Concept
image	O
of	O
a	O
disk	O
(	O
usually	O
floppy	B-Device
)	O
.	O
</s>
<s>
The	O
disk	O
is	O
read	O
block-by-block	O
,	O
and	O
thus	O
its	O
data	O
structure	O
is	O
maintained	O
.	O
</s>
<s>
DMS	O
won	O
approval	O
particularly	O
in	O
the	O
demo	O
scene	O
and	O
the	O
Warez	B-Application
scene	I-Application
,	O
since	O
with	O
this	O
tool	O
,	O
disk	O
images	O
could	O
generally	O
be	O
transferred	O
easily	O
with	O
telecommunication	O
modems	B-Application
to	O
mailbox	O
networks	O
like	O
FidoNet	O
for	O
efficient	O
distribution	O
.	O
</s>
<s>
The	O
DiskMasher	O
format	O
is	O
copyright-protected	O
and	O
has	O
problems	O
storing	O
particular	O
bit	O
sequences	O
due	O
to	O
bugs	O
in	O
the	O
compression	B-General_Concept
algorithm	I-General_Concept
,	O
but	O
was	O
widely	O
used	O
in	O
the	O
pirate	O
and	O
demo	O
scenes	O
.	O
</s>
<s>
To	O
avoid	O
these	O
issues	O
,	O
a	O
number	O
of	O
other	O
disk	O
compressors	O
were	O
developed	O
that	O
used	O
alternative	O
disk	O
reading	O
and	O
compression	O
methods	O
,	O
for	O
instance	O
,	O
xDM	O
or	O
XAD	B-Application
(	O
software	O
)	O
.	O
</s>
