How to verify Sudden Motion Sensor works for my HDD?

Discussion in 'MacBook Pro' started by hzxu, Jun 8, 2013.

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  1. hzxu, Jun 8, 2013

    hzxu macrumors regular

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    Dec 17, 2008
    #1
    Recently I upgraded my Mid 2012 Macbook Pro's HDD to a Hitachi Travelstar 7k1000 1TB HDD, one thing I noticed is that in case of vibration, there is no "clicking" sound from HDD, with old HDD I can always hear it when vibrating, so I downloaded a command line program called ASMTracker, it shows my SMS is initialised and shows it's values, but I'm a bit worried that it does not actually park the head of HDD in vibration. Is there anyway to verify it? I know the SMART tool, can I see any evidence by comparing any of the SMART values before and after vibration?

    Thanks!
     
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  2. sneak3, May 13, 2014

    sneak3 macrumors 6502a

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    #2
    I wanted to know that as well.

    Bumping.
     
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  3. mojolicious, May 13, 2014

    mojolicious macrumors 68000

    mojolicious

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    #3
    'Bumping' is actually the answer to the question.
     
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  4. simonsi, May 13, 2014

    simonsi macrumors 601

    simonsi

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    #4
    How do you test the airbags in your car? Seriously do you want to cause an event that by definition the SMS sensor defines as potentially harmful to the HDD just to test the head parking:confused:

    Just assume the head park is very quiet, everything about my HGST 1TB is VERY quiet...
     
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  5. rapicell, May 13, 2014

    rapicell macrumors regular

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    #5
    The sensor should be on by default, at least for MacBooks that have HDDs as the original drive.
     
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  6. simonsi, May 13, 2014

    simonsi macrumors 601

    simonsi

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    #6
    He's verified the sensor is on, he just doesn't trust it :eek:
     
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