External USB hard drive disconnecting issue

Discussion in 'Mac Accessories' started by senseless, Jan 17, 2010.

  1. senseless macrumors 68000

    senseless

    Joined:
    Apr 23, 2008
    Location:
    Pennsylvania, USA
    #1
    I've seen a few threads on this issue, but haven't found an answer. I have a 750gb external USB LaCie drive as Time Machine backup, but when the Imac I7 sleeps, the drive will behave as if it has been disconnected. There's the "you should eject disk before..." message with warnings about damage.

    I suppose I could disable sleep mode, but does anyone know what's going on? My external firewire drive never has this problem.
     
  2. DewGuy1999 macrumors 68040

    DewGuy1999

    Joined:
    Jan 25, 2009
    #2
    Do you have Put the hard disk(s) to sleep when possible checked in System Preferences/Energy Saver?
     
  3. senseless thread starter macrumors 68000

    senseless

    Joined:
    Apr 23, 2008
    Location:
    Pennsylvania, USA
    #3
    No, that is unchecked.
     
  4. techcafe macrumors member

    Joined:
    Nov 27, 2009
    #4
    it should be checked, so MacOS will attempt to spin-down the drive before entering sleep mode
     
  5. senseless thread starter macrumors 68000

    senseless

    Joined:
    Apr 23, 2008
    Location:
    Pennsylvania, USA
    #5
    Really? I'll try it checked to see if the problem recurs and report back.
     
  6. senseless thread starter macrumors 68000

    senseless

    Joined:
    Apr 23, 2008
    Location:
    Pennsylvania, USA
    #6
    So far so good, but it sure is annoying having the drives spin down so quickly. If the drives slept after 10 minutes of inactivity, it would be better. Thanks.
     
  7. techcafe macrumors member

    Joined:
    Nov 27, 2009
    #7
    i completely AGREE... the power management settings (for the hard drives) are far too aggressive. there should be a slider for Hard Drive Sleep (like the Display/Computer Sleep sliders in the Energy Saver control panel).

    i don't like the drives spinning down (and back up again) so frequently, so i disabled hard drive sleep
     
  8. DewGuy1999 macrumors 68040

    DewGuy1999

    Joined:
    Jan 25, 2009
    #8
  9. stroedel macrumors newbie

    Joined:
    Jul 27, 2010
    #9
    i have same problem...
    my questions:

    - how can i avoid this?
    - is there a possiblity to get hard drive awake without doing log off/logon on
     

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