<s>
Click	B-Error_Name
of	I-Error_Name
death	I-Error_Name
is	O
a	O
term	O
that	O
had	O
become	O
common	O
in	O
the	O
late	O
1990s	O
referring	O
to	O
the	O
clicking	O
sound	O
in	O
disk	B-Device
storage	I-Device
systems	O
that	O
signals	O
a	O
disk	B-Device
drive	I-Device
has	O
failed	O
,	O
often	O
catastrophically	O
.	O
</s>
<s>
The	O
clicking	O
sound	O
itself	O
arises	O
from	O
the	O
unexpected	O
movement	O
of	O
the	O
disk	B-Device
's	O
read/write	B-Device
actuator	I-Device
.	O
</s>
<s>
At	O
startup	O
,	O
and	O
during	O
use	O
,	O
the	O
disk	B-Device
head	I-Device
must	O
move	O
correctly	O
and	O
be	O
able	O
to	O
confirm	O
that	O
it	O
is	O
correctly	O
tracking	O
data	O
on	O
the	O
disk	B-Device
.	O
</s>
<s>
If	O
the	O
head	O
fails	O
to	O
move	O
as	O
expected	O
or	O
upon	O
moving	O
cannot	O
track	O
the	O
disk	B-Device
surface	O
correctly	O
,	O
the	O
disk	B-General_Concept
controller	I-General_Concept
may	O
attempt	O
to	O
recover	O
from	O
the	O
error	O
by	O
returning	O
the	O
head	O
to	O
its	O
home	O
position	O
and	O
then	O
retrying	O
,	O
at	O
times	O
causing	O
an	O
audible	O
"	O
click	O
"	O
.	O
</s>
<s>
The	O
phrase	O
"	O
click	B-Error_Name
of	I-Error_Name
death	I-Error_Name
"	O
originated	O
to	O
describe	O
a	O
failure	O
mode	O
of	O
the	O
Iomega	B-Operating_System
ZIP	I-Operating_System
drives	I-Operating_System
,	O
appearing	O
in	O
print	O
as	O
early	O
as	O
January	O
30	O
,	O
1998	O
.	O
</s>
<s>
In	O
his	O
podcast	O
of	O
September	O
18	O
,	O
2008	O
,	O
Mac	B-Device
journalist	O
Tim	O
Robertson	O
claimed	O
to	O
have	O
coined	O
the	O
phrase	O
in	O
the	O
early	O
1990s	O
.	O
</s>
<s>
Iomega	B-Operating_System
Zip	I-Operating_System
drives	I-Operating_System
were	O
prone	O
to	O
developing	O
misaligned	O
heads	O
.	O
</s>
<s>
Iomega	O
received	O
thousands	O
of	O
complaints	O
about	O
the	O
click	B-Error_Name
of	I-Error_Name
death	I-Error_Name
.	O
</s>
<s>
Iomega	O
stated	O
that	O
fewer	O
than	O
1	O
in	O
200	O
Jaz	O
and	O
Zip	B-Operating_System
drive	I-Operating_System
owners	O
were	O
affected	O
by	O
the	O
click	B-Error_Name
of	I-Error_Name
death	I-Error_Name
.	O
</s>
<s>
On	O
a	O
hard	B-Device
disk	I-Device
drive	I-Device
,	O
the	O
click	B-Error_Name
of	I-Error_Name
death	I-Error_Name
refers	O
to	O
a	O
similar	O
failure	O
mode	O
;	O
the	O
head	O
actuator	O
may	O
click	O
or	O
knock	O
as	O
the	O
drive	O
repetitively	O
tries	O
to	O
recover	O
from	O
one	O
or	O
more	O
errors	O
.	O
</s>
