Secondary internal drive in MacBook Pro won't spin down

Discussion in 'Mac Basics and Help' started by AmbientChaos, Jun 23, 2014.

  1. AmbientChaos macrumors member

    AmbientChaos

    Joined:
    Feb 11, 2014
    #1
    I replaced my MacBook Pro's internal drive with an SSD and used the OWC Data Doubler to put a 750GB WD Black where the optical bay used to be.

    I've noticed, however, that the WD Black won't spin down. Even leaving my Mac idle for a long time I can feel it rotating. In Energy Saver "Put hard disks to sleep when possible is checked".

    I'm at a loss at what to do here. Thoughts?
     
  2. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #2
    I believe any hard drive in the optical drive bay won't go to sleep.
     
  3. SandboxGeneral Moderator

    SandboxGeneral

    Staff Member

    Joined:
    Sep 8, 2010
    Location:
    Orbiting a G-type Main Sequence Star
    #3
    I think some HDD's can't make use of the command to spin down as others can.
     
  4. AmbientChaos thread starter macrumors member

    AmbientChaos

    Joined:
    Feb 11, 2014
    #4
    Thanks all for chiming in.

    For anyone that's still interested, I timed the spin down time and while it did spin down after 15 minutes (which seemingly ignores the Mavericks default of 10) The drive still does spin down so luckily I avoided having to run scripts to mount and unmount the drive.

    However the fact that it was a 7200 RPM drive meant noticeably higher vibration as well as increased temperatures which I thought were both detrimental to my Mac's longevity.

    So I've taken to putting the factory drive back in. It spins down as it did before (didn't time), but I can neither hear nor feel it spinning which is good. The 7200 goes in an enclosure now.
     

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