<s>
CDemu	B-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
virtual	B-Application
drive	I-Application
software	O
,	O
designed	O
to	O
emulate	O
an	O
optical	O
drive	O
and	O
optical	B-Device
disc	I-Device
(	O
including	O
CD-ROMs	B-Device
and	O
DVD-ROMs	O
)	O
on	O
the	O
Linux	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
,	O
CDemu	B-Language
is	O
not	O
available	O
in	O
the	O
official	O
repositories	O
of	O
Debian	O
,	O
Ubuntu	B-Operating_System
and	O
Fedora	O
Linux	B-Operating_System
for	O
any	O
release	O
,	O
but	O
it	O
is	O
available	O
via	O
official	O
PPA	B-Application
for	O
Ubuntu	B-Operating_System
and	O
COPR	O
for	O
Fedora	O
Linux	B-Operating_System
.	O
</s>
<s>
CDEmu	B-Language
consists	O
of	O
:	O
</s>
<s>
a	O
kernel	B-Operating_System
module	O
implementing	O
a	O
virtual	O
SCSI	B-Architecture
host	O
bus	O
adapter	O
,	O
</s>
<s>
libmirage	O
which	O
is	O
a	O
software	O
library	O
for	O
interpreting	O
optical	B-General_Concept
disc	I-General_Concept
images	I-General_Concept
,	O
</s>
<s>
a	O
daemon	O
which	O
emulates	O
the	O
functionality	O
of	O
a	O
SCSI	B-Architecture
optical	O
drive+disc	O
,	O
</s>
<s>
textmode	O
and	O
GTK	B-Application
clients	O
for	O
controlling	O
the	O
emulator	O
.	O
</s>
<s>
The	O
software	O
is	O
portable	O
to	O
other	O
operating	O
systems	O
supported	O
by	O
GLib	B-Language
,	O
with	O
the	O
exceptions	O
of	O
the	O
kernel	B-Operating_System
module	O
and	O
the	O
clients	O
which	O
rely	O
on	O
d-bus	B-Language
communication	O
.	O
</s>
<s>
CDemu	B-Language
was	O
originally	O
designed	O
by	O
Robert	O
Penz	O
and	O
Justus	O
Schwartz	O
as	O
a	O
patch	O
for	O
MPlayer	B-Application
that	O
allowed	O
mounting	B-Application
.CUE/.BIN	O
files	O
.	O
</s>
<s>
After	O
the	O
patch	O
was	O
completed	O
,	O
they	O
realized	O
the	O
simplicity	O
,	O
and	O
wrote	O
a	O
module	O
for	O
Linux	B-Operating_System
kernel	I-Operating_System
.	O
</s>
<s>
Originally	O
,	O
CDemu	B-Language
was	O
named	O
Virtual	O
CD	O
,	O
but	O
this	O
name	O
had	O
been	O
previously	O
trademarked	O
,	O
and	O
the	O
owners	O
of	O
the	O
trademark	O
requested	O
that	O
they	O
not	O
use	O
the	O
name	O
.	O
</s>
<s>
As	O
of	O
June	O
,	O
2007	O
,	O
development	O
on	O
CDemu	B-Language
0.8	O
ceased	O
and	O
a	O
rewrite	O
was	O
developed	O
instead	O
.	O
</s>
<s>
This	O
new	O
version	O
of	O
CDemu	B-Language
took	O
another	O
approach	O
to	O
the	O
emulation	O
by	O
doing	O
as	O
much	O
as	O
possible	O
in	O
userspace	B-Operating_System
.	O
</s>
<s>
As	O
of	O
version	O
2.0.0	O
CDemu	B-Language
supports	O
the	O
following	O
image	O
formats	O
:	O
</s>
<s>
The	O
emulator	O
endeavors	O
to	O
follow	O
the	O
MMC-3	O
standard	O
for	O
SCSI	B-Architecture
optical	O
drives	O
as	O
closely	O
as	O
possible	O
,	O
ensuring	O
realistic	O
and	O
accurate	O
emulation	O
.	O
</s>
<s>
Optical	B-Device
media	I-Device
emulated	O
by	O
CDemu	B-Language
can	O
be	O
mounted	B-Application
within	O
Linux	B-Operating_System
.	O
</s>
<s>
CDemu	B-Language
has	O
the	O
support	O
for	O
CD	O
subchannels	O
,	O
CD-Text	O
,	O
ISRC，MCN	O
and	O
ECC/EDC	B-Error_Name
,	O
DPM/RMPS	B-Device
.	O
</s>
