Booting With External Drive Connected

Discussion in 'Mac Basics and Help' started by Rian Gray, Aug 20, 2014.

  1. Rian Gray macrumors regular

    Rian Gray

    Joined:
    Jul 13, 2011
    Location:
    NJ, United States
    #1
    I have 4 drives connected to my iMac, one of which is Time Machine backup drive.

    Every time I try to boot with the external drives connected to the machine, it stays in gray booting screen. It doesn't stop or halt, I simply need to disconnect or turn off my drive docks. I certainly checked startup disk setting, it was set to Mac.

    Has anyone encountered this kind of problem before? I never had such problem before, so I'm not sure if this is ordinary behavior.
     
  2. campyguy macrumors 68040

    Joined:
    Mar 21, 2014
    Location:
    Portland / Seattle
    #2
    I have - with USB3-capable drives, but not with TB drives or a old G-Tech eSATA RAID drive connected via a (really cheap) USB-eSATA adapter. I have also experienced what you're describing when I have an HDTV connected via HDMI, maybe 1 out of 20 times.

    None of the cables I'm using are "cheap", and it's random. And annoying...
     

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