SSD - Disable Sudden Motion Sensor

Discussion in 'MacBook Pro' started by be300test, Feb 18, 2009.

  1. be300test macrumors member

    Joined:
    Nov 7, 2008
    #1
    Hi,

    i have noticed the sudden motion sensor is still active when a ssd is installed. i have disabled mine.

    there would be no need for it if you have a ssd....looking for some input on it.

    anyone who wants to disable it use : sudo pmset -a sms 0

    use : pmset -g

    check and make sure sms = 0

    backup before you do it.
     
  2. claimed4all macrumors 6502

    Joined:
    Sep 26, 2008
  3. Erasmus macrumors 68030

    Erasmus

    Joined:
    Jun 22, 2006
    Location:
    Hiding from Omnius in Australia
    #3
    Out of interest, has anyone with an SSD tried shaking their computer around while playing video or music? Does the SMS actually cause problems with an SSD?
     
  4. Fubar1977 macrumors 6502a

    Fubar1977

    Joined:
    Jul 30, 2010
    Location:
    North Yorkshire, UK
    #4
    I`d like to know about this too, I have not disabled the SMS since installing my SSD.
    Should I or does it make no difference?
    Any advice appreciated.
     
  5. Gen, Feb 6, 2011
    Last edited: Feb 6, 2011

    Gen macrumors 6502a

    Gen

    Joined:
    Jul 15, 2008
    #5
    Having it on makes no sense, it only bottlenecks your system.
    The SMS stops the head, on a regular HDD, if it detects too much movement that may harm the drive. Since an SSD has no moving head, or any moving parts, the SMS simply clicks on for no reason. It's a waste. Turn it off if you're using an SSD.
     
  6. Fubar1977, Feb 6, 2011
    Last edited: Feb 6, 2011

    Fubar1977 macrumors 6502a

    Fubar1977

    Joined:
    Jul 30, 2010
    Location:
    North Yorkshire, UK
    #6
    Thanks for that, off to disable my SMS now...:)
    Edit: Done. My first Terminal foray has been a success.
     

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