High Sierra. WD external drive won't mount.

Discussion in 'macOS High Sierra (10.13)' started by MacUser09, Sep 27, 2017.

  1. MacUser09 macrumors regular

    Joined:
    Sep 26, 2009
    Location:
    UK
    #1
    Updated 2015 MBP to High Sierra.

    I have a WD External USB 2 Hard Drive. When I connect to my MBP, it no longer mounts. Nothing on desktop or sidebar.

    Can see it under External in Disk Utilities, but it is greyed out. The drive is powered and I can feel it spinning in case.

    Shows in bar as USB External Physical Volume ExFAT. Not mounted.

    I have a Seagate with my iTunes Library on it, and it connects, no problem.

    Any ideas folks?
     
  2. BrianBaughn macrumors 603

    BrianBaughn

    Joined:
    Feb 13, 2011
    Location:
    Baltimore, Maryland
    #2
    You'll have to try it on another computer to eliminate possibilities.

    It won't mount via Disk Utility (right-click..."Mount")?
     
  3. MacUser09 thread starter macrumors regular

    Joined:
    Sep 26, 2009
    Location:
    UK
    #3
    Thanks. That's what I have already done. When I tried it again on my Mac, it worked. Sometimes it does, and sometimes it doesn't. Weird.
     
  4. blackmatchstick, Jan 5, 2018
    Last edited: Apr 9, 2018

    blackmatchstick macrumors newbie

    blackmatchstick

    Joined:
    Mar 16, 2010
    Location:
    Delhi,India
    #4
    I had the same problem took long time figure this out.

    Situation:
    You can not see your External HDD or Usb Pen Drives appearing on the desktop.

    Solution:
    (If you can see your drive mounted in the disk utility but its not showing in finder.)
    All you need to do is to fix the launch services database on your mac, the easiest way to do is to
    download Onyx software (its free) and rebuild the launch services database using the maintenance tab, it will take time
    so relax have a cup of coffee. After its done restart your machine.

    Thanks
     
  5. infantrytrophy macrumors regular

    Joined:
    Oct 27, 2013
    #5
    Do you think that booting into Safe Mode, then re-booting normally, would do the same thing? It has been my experience that a Safe Mode boot-then-reboot sequence frequently solves this type of obscure problem.
     
  6. blackmatchstick macrumors newbie

    blackmatchstick

    Joined:
    Mar 16, 2010
    Location:
    Delhi,India
    #6
    I really can not comment on that part, however, whenever this issues comes up i do what i mentioned and all is sorted.
     

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5 September 27, 2017