<s>
A	O
C2	B-Device
error	I-Device
,	O
also	O
known	O
as	O
E32	O
error	O
,	O
is	O
a	O
read	O
error	O
of	O
a	O
Compact	O
Disc	O
.	O
</s>
<s>
C2	B-Device
errors	I-Device
can	O
to	O
a	O
degree	O
be	O
recovered	O
by	O
the	O
hardware	O
error	B-Error_Name
detection	I-Error_Name
and	I-Error_Name
correction	I-Error_Name
scheme	O
.	O
</s>
<s>
A	O
CD	B-Device
drive	O
can	O
have	O
extraction	O
errors	O
when	O
the	O
data	O
on	O
the	O
disc	O
is	O
not	O
readable	O
due	O
to	O
scratches	O
or	O
smudges	O
.	O
</s>
<s>
C2	B-Device
error	B-Error_Name
correction	I-Error_Name
is	O
an	O
analysis	O
over	O
many	O
interleaved	O
frames	O
,	O
an	O
improvement	O
over	O
C1	O
error	B-Error_Name
correction	I-Error_Name
,	O
which	O
analyzed	O
just	O
one	O
frame	O
,	O
resulting	O
in	O
more	O
accurate	O
data	O
correction	O
.	O
</s>
<s>
C2	B-Device
error	I-Device
correction	O
codes	O
are	O
also	O
used	O
by	O
the	O
Digital	O
Audio	O
Tape	O
(	O
DAT	O
)	O
format	O
.	O
</s>
<s>
Some	O
copy	B-Application
protection	I-Application
schemes	O
add	O
false	O
C2	B-Device
errors	I-Device
to	O
discs	O
to	O
discourage	O
copying	O
.	O
</s>
<s>
While	O
causing	O
data	O
loss	O
on	O
Video	O
CDs	B-Device
(	O
Mode	O
2	O
Form	O
2	O
)	O
and	O
Audio	O
CDs	B-Device
,	O
individual	O
C2	B-Device
errors	I-Device
are	O
correctable	O
on	O
data	O
CDs	B-Device
(	O
using	O
Mode	O
1	O
and	O
Mode	O
2	O
Form	O
1	O
)	O
.	O
</s>
<s>
C2	B-Device
errors	I-Device
can	O
be	O
measured	O
using	O
surface	O
error	O
scanning	O
,	O
and	O
are	O
usually	O
caused	O
by	O
scratches	O
and	O
dirt	O
on	O
the	O
data	O
surface	O
,	O
as	O
well	O
as	O
media	B-Device
degradation	I-Device
.	O
</s>
