External Drive not mounting

Discussion in 'OS X El Capitan (10.11)' started by ChrisDx, Jan 4, 2016.

  1. ChrisDx macrumors member

    May 2, 2007

    I have several external drives that I use on several computers. One external won't mount on my iMac but will mount on other laptops. All are running El Capitan. This problem did not occur till I recently updated to El Capitan.

    Any help is much appreciated.

  2. xgman macrumors 601


    Aug 6, 2007
    Try all of your usb ports. There have been some intermittent usb drive issues with EL Cap in some versions.
  3. Gochugogi macrumors regular


    Oct 27, 2013
    Sandwich Isles
    Happens to me every couple days or so. I power cycle the drive and it almost always mounts. Unfortunately my newer drives lack a power switch so I have to plug the wall wart plug to power down and plug it back it.
  4. ChrisDx thread starter macrumors member

    May 2, 2007
    Ya know what? Now it's working. Restarted the iMac and it's good to go. However, I do have another related issue which I will post in a separate thread.
  5. Jess13 Suspended


    Nov 3, 2013
    One of my MBP USB ports suddenly quit recognizing my wired mouse but does recognize my iPhone, and this just began to happen with the most recent public El Cap release.

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