<s>
In	O
computer	O
hardware	O
,	O
active	B-Device
hard-drive	I-Device
protection	I-Device
refers	O
to	O
technology	O
that	O
attempts	O
to	O
avoid	O
or	O
reduce	O
mechanical	O
damage	O
to	O
hard	B-Device
disk	I-Device
drives	I-Device
by	O
preparing	O
the	O
disk	O
prior	O
to	O
impact	O
.	O
</s>
<s>
This	O
approach	O
is	O
mainly	O
used	O
in	O
laptop	B-Device
computers	I-Device
that	O
are	O
frequently	O
carried	O
around	O
and	O
more	O
prone	O
to	O
impacts	O
than	O
desktop	B-Device
computers	I-Device
.	O
</s>
<s>
The	O
software	O
then	O
tells	O
the	O
hard	B-Device
disk	I-Device
to	O
unload	O
its	O
heads	B-Device
to	O
prevent	O
them	O
from	O
coming	O
in	O
contact	O
with	O
the	O
platter	B-Device
,	O
thus	O
potentially	O
preventing	O
head	O
crash	O
.	O
</s>
<s>
Many	O
laptop	B-Device
vendors	O
have	O
implemented	O
this	O
technology	O
under	O
different	O
names	O
.	O
</s>
<s>
Some	O
hard-disk	B-Device
drives	I-Device
also	O
include	O
this	O
technology	O
,	O
needing	O
no	O
cooperation	O
from	O
the	O
system	O
.	O
</s>
