Momentus 7200.4 500GB ST9500420AS doesn´t get parked on sudden motion

Hello,
I replaced the original harddisk of my macbook pro 13" (mid 2009) with a Seagate Momentus 7200.4 500GB ST9500420AS hard drive. Since that the disk doesn´t get parked when a sudden motion occurs, although the motion sensor is still enabled and works (seismac). With the old disk I heared a "klick" when lifting the mbp to fast and the disk was "parked"

I browsed several forums and have the following information right now:

1. In some cases the drive works with no problems at all.

2. Some people had problems with the ST9500420AS-G model, cause this one has an internal motion sensor that is incompatible with the one from Apple. Those people recommend the ST9500420AS, I am using.

Is there any way to fix that problem? Should I use another drive?

Thanks for your help.
Jürgen

P.S.: I posted this by mistake in the wrong category before, sorry.

iMac, Mac OS X (10.6.2)

Posted on Mar 18, 2010 6:05 AM

Reply
2 replies

Apr 27, 2010 11:30 AM in response to juergen.vdl

Hi,
i'm experiencing the same exact problem on my MBP Unibody Late 2008.
HD is the same Seagate Momentus 7200.4 500gb not the G version, so it's the one without a motion sensor integrated.
Sudden Motion Sensor on MacBook is working with no problem, i checked it with Seismac App.
Still, the HD is not parking the head when a shock is reported.
I'm looking for a solution too so i hope upping the thread doesn't bother anyone.
Thanks.
Julian.

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Momentus 7200.4 500GB ST9500420AS doesn´t get parked on sudden motion

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