External HDD ejecting itself

Discussion in 'Mac Basics and Help' started by phone5g, Jan 21, 2016.

  1. phone5g macrumors newbie

    Jan 29, 2013
    I recently upgraded my 2012 MBP hdd to a ssd and bought an external enclosure for the old drive. I plugged it into my usb port and it was fine for about 30 minutes and then it began ejecting itself very frequently. Is this a common problem?
  2. highlystrange macrumors member


    Aug 30, 2015
    ÜT: 42.710806,-71.447929
    I have a similar problem: I have several external drives connected to my Mini. When the computer isn't used for a number of hours (overnight), each drive has a message about being ejected improperly. But when I dismiss the message, all is good. I was hoping the answer to your question might shed some light on my situation.
  3. Fishrrman macrumors G5


    Feb 20, 2009
    I've seen that with some enclosures, myself.

    Might be:
    - problem with the enclosure (controller board? controller chip?)
    - problem with the cable
    - conflict between two or more enclosures/controllers (I realize you only have one)
    - something else.
  4. ppenn macrumors regular


    Oct 22, 2013
    I'm prone to believe it's an OS issue. this has been happening to me for 3 years and I just gave up because everyone makes the same suggestions and none of them are applicable.

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