paulhoynak
Level 1 (0 points)

Q: external drive ejects at sleep

I recently upgraded to OS 10.8.5 and now when my iMac (late 2012) wakes from sleep I get the error that my Lacie external thunderbolt raid drive has been ejected improperly. Then it reconnects right away and the Lacie raid manager pops up and says the disks are ok.

 

Is this a known issue with the OS update or should I worry that my drive may be failing? I have all of my iTunes info on the drive.

iMac (27-inch, Late 2012), OS X Mountain Lion (10.8)

Posted on Sep 13, 2013 1:35 PM

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paulhoynak

Q: external drive ejects at sleep

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  • by kahjot,

    kahjot kahjot Mar 10, 2015 5:46 PM in response to Maxim Porges
    Level 4 (1,347 points)
    Desktops
    Mar 10, 2015 5:46 PM in response to Maxim Porges

    Some of you may want to try a utility called "Mountain": http://www.appgineers.de/mountain/

     

    It has worked well for me so far to control the sleep-related improper disk ejection issue.

  • by ontwowheels,

    ontwowheels ontwowheels Mar 16, 2015 6:43 AM in response to kahjot
    Level 1 (0 points)
    Mar 16, 2015 6:43 AM in response to kahjot

    App looks good, but I had some questions for the developers and they have gone absolutely ignored.  So....there's that.

  • by kahjot,

    kahjot kahjot Mar 16, 2015 7:10 AM in response to ontwowheels
    Level 4 (1,347 points)
    Desktops
    Mar 16, 2015 7:10 AM in response to ontwowheels

    ontwowheels wrote:

     

    App looks good, but I had some questions for the developers and they have gone absolutely ignored.  So....there's that.

     

    I have e-mailed them twice. The first time, they got back to me pretty quickly. I haven't had a reply yet to what I sent them most recently. That e-mail concerned a problem I uncovered in the process of using DiskmakerX to create an OS installer on a flash drive. I had done this several times before without any problem, but this last time, the process crapped out at the same point repeatedly. I began to suspect that the installer app was damaged, and managed to download it again (no thanks to the App Store, which made the process unnecessarily time-consuming and irritating in the extreme, but that's another story). The fresh installer failed, also. I tried running it to install the OS on a fresh HD, and it failed there, also. At that point, I started thinking about the somewhat cryptic error message that popped up when it failed to install, and realized it seemed to have something to do with mounting or unmounting of resources in the installer, and on a hunch, I quit Mountain. After that, everything worked properly.

     

    So while Mountain does a good job of keeping your disks from being improperly ejected, it does apparently have to be disabled while you are installing an OS or running DiskmakerX.

     

    I suspect it's a very small operation, maybe just one person

  • by ontwowheels,

    ontwowheels ontwowheels Mar 16, 2015 7:19 AM in response to kahjot
    Level 1 (0 points)
    Mar 16, 2015 7:19 AM in response to kahjot

    Thanks.  I emailed once and tweeted a few times with no response.  The app didn't seen to eject my USB drive before going to sleep, with what little testing I did.  And I wanted to know what is the "helper" process during the install that required admin privilage?

  • by TLWilson7,

    TLWilson7 TLWilson7 May 4, 2015 7:49 AM in response to ontwowheels
    Level 1 (0 points)
    May 4, 2015 7:49 AM in response to ontwowheels

    Same problem.  Years later.  Many versions of OS X later.

     

    Brand new Mac Pro 2013, running 10.10.3.  6 cores, 64gb ram, d500 cards, 256gb storage.  Primary storage is a LaCie 1TB thunderbolt little big disk 2.  Apparently last night it ejected and automatically reconnected 4 times.  Put disks to sleep is unchecked.

  • by stealth_video,

    stealth_video stealth_video Nov 30, 2015 2:41 PM in response to paulhoynak
    Level 1 (0 points)
    Nov 30, 2015 2:41 PM in response to paulhoynak

    Same problem - Mac Pro 10.11.5, lacie 2Big USB3 8Tb (for time machine).
    I also have a Lacie Thunderbolt RAID enclosure as a main production drive that does not have this issue.

    Isolated to usb, I think. Looking for a software fix instead of new hardware.

  • by David Carlin,

    David Carlin David Carlin Nov 30, 2015 4:41 PM in response to stealth_video
    Level 1 (45 points)
    Nov 30, 2015 4:41 PM in response to stealth_video

    Same problem - Mac Pro 10.11.5, lacie 2Big USB3 8Tb (for time machine).

     

    10.11.5 doesn't exist yet.  Can you double check what version of OS X you have?  Go to Apple menu in the top right and click 'About This Mac'

  • by stealth_video,

    stealth_video stealth_video Dec 1, 2015 7:33 AM in response to David Carlin
    Level 1 (0 points)
    Dec 1, 2015 7:33 AM in response to David Carlin

    Eek I'm not from the future - I meant 10.10.5

    Also USB sleeping / trying to power off might be part of this, I disabled  computer sleep (energy saver > 'Prevent computer form sleeping automaticly when the display is off')... and 12 hours of no hard crashing, nor unexpected ejecting. Yay!

  • by c3Dub,

    c3Dub c3Dub Feb 25, 2016 5:05 PM in response to Mark Levitt1
    Level 1 (0 points)
    Feb 25, 2016 5:05 PM in response to Mark Levitt1

    Thank you.

     

    This seems to have fixed the same problem on 13" Mid-2012 MacBook Pro and my four 2TB drives (2 Seagate and 2 WD) running under El Capitan 10.11.3.

    [I had been so frustrated that I replaced my USB 3 hub with a new one from a different vendor, but the problem persisted.]

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