<s>
A	O
servowriter	B-Device
or	O
disk	O
writer	O
is	O
a	O
complex	O
machine	O
used	O
in	O
the	O
manufacturing	O
of	O
a	O
hard	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
The	O
servowriter	B-Device
writes	O
the	O
tracks	O
on	O
the	O
raw	O
media	O
in	O
the	O
factory	O
before	O
the	O
media	O
is	O
assembled	O
into	O
the	O
disk	O
drive	O
.	O
</s>
<s>
A	O
servowriter	B-Device
is	O
used	O
to	O
write	O
servo	O
tracks	O
on	O
the	O
disk	B-Device
platters	I-Device
which	O
make	O
up	O
part	O
of	O
the	O
servomechanism	O
that	O
positions	O
the	O
actuator	O
arm	O
.	O
</s>
<s>
A	O
servowriter	B-Device
can	O
be	O
split	O
in	O
three	O
major	O
parts	O
:	O
</s>
