USB drives are ejected and mounted constantly

Discussion in 'OS X Yosemite (10.10)' started by petalino, Oct 22, 2015.

  1. petalino macrumors regular

    Nov 21, 2010

    I have this annoying problem:
    OS Yosemite
    27 inch Imac Late, 2013

    I have 4 USB drives connected to the Mac via a self powered Belkin hub.

    During daily use (I never switch it off overnight), all USB drives are being ejected and remounted several times during the day, as I am working.

    I also get a message: "disk not ejected properly".

    Any ideas why this might be happening?
    Is this in any way harmful to the drives? Its been happening for almost one year now.
  2. Ebenezum macrumors 6502a

    Mar 31, 2015
    I had problems with external USB drives with Yosemite, 10.10.4 or 10.10.5 fixed those issues and I don't use hub so I am not certain if its related to your case.

    Have you contacted Belkin support for any potential issues with Yosemite?
  3. petalino thread starter macrumors regular

    Nov 21, 2010
    I should have mentioned that I am using WD MyBook Drives
  4. ryan_7 macrumors newbie

    Apr 26, 2016

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