How to verify Sudden Motion Sensor works for my HDD?

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

  1. hzxu macrumors regular

    Joined:
    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!
     
  2. sneak3 macrumors 6502

    Joined:
    Oct 14, 2011
  3. mojolicious macrumors 68000

    mojolicious

    Joined:
    Mar 18, 2014
    Location:
    Sarf London
    #3
    'Bumping' is actually the answer to the question.
     
  4. simonsi macrumors 601

    simonsi

    Joined:
    Jan 3, 2014
    Location:
    Auckland
    #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...
     
  5. rapicell macrumors regular

    Joined:
    Mar 20, 2013
    #5
    The sensor should be on by default, at least for MacBooks that have HDDs as the original drive.
     
  6. simonsi macrumors 601

    simonsi

    Joined:
    Jan 3, 2014
    Location:
    Auckland
    #6
    He's verified the sensor is on, he just doesn't trust it :eek:
     

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