External hard drives won't go to sleep after inactivity

Discussion in 'macOS Mojave (10.14)' started by amoergosum, Aug 15, 2019 at 12:57 AM.

  1. amoergosum macrumors 6502

    Joined:
    Oct 20, 2008
    #1
    I'm using a 2019 iMac and macOS Mojave 10.14.6 .

    My external hard drives won't go to sleep anymore after inactivity.

    I checked 'Put hard discs to sleep when possible' in system preferences.


    Does anyone else have this issue? What can I do about it?
     
  2. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #2
    You could do what I do:
    If I'm not going to be using the drive for a good while (for hours or even days) -- I just disconnect it.

    That works 100% of the time... ;)
     
  3. MSastre, Aug 15, 2019 at 11:51 AM
    Last edited: Aug 15, 2019 at 11:56 AM

    MSastre macrumors 6502a

    MSastre

    Joined:
    Aug 18, 2014
    #3
    I don't remember that working for external drives .. key words "when possible". Like Fishrrman, I always unmount and turn them off manually. I don't want my drives to shut off automatically because of working with video.
     
  4. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #4
    I'm pretty sure that "feature" is dependent on the external drive interface - the enclosure or cable that connects to the hard drive. Some manufacturers provide that function, others do not.
     
  5. mikzn macrumors 65816

    mikzn

    Joined:
    Sep 2, 2013
    Location:
    Vancouver
    #5
    Some apps can prevent the drive from "sleeping" if they are open and if they check on files that are on that drive

    I used to use a script for a "One Click" desktop option to un-mount and re-mount some drives that were permanently connected and would spin all the time, but I gave up on that and now just unplug the drives when not needed

    Some of them are back up drives and CCC gives me an alert when it cannot find the drive, and I reconnect them as needed
     
  6. fisherking macrumors 604

    fisherking

    Joined:
    Jul 16, 2010
    Location:
    ny somewhere
    #6
    some drives (g-tech, for example), seem to never sleep; my seagate drives do sleep...
     

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5 August 15, 2019