Internal drive sometimes not mounting

Discussion in 'Mac Pro' started by msintros, Sep 18, 2017.

  1. msintros macrumors member

    Joined:
    Jul 7, 2014
    #1
    One of my internal drives (not a boot drive) sometimes will just not mount and is not visible in the Disk Utility.

    Sometimes when waking the computer from sleep, it will give me a message in the top right saying something about it (I think that it is not unmounted properly or something, but I can't remember exactly). Usually it will come back after a restart, sometimes not.

    I don't know if the drive is failing but it runs fine when it is mounted and doesn't ever disappear while the computer is running, only when it has been asleep.

    Any tips?
     
  2. h9826790 macrumors G5

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #2
    Which HDD? which Mac? which OS? Do you mean a warm restart can bring back the drive? Or a cold boot is required?
     
  3. msintros thread starter macrumors member

    Joined:
    Jul 7, 2014
    #3
    Sorry, should have included that. 500 GB internal on a Mac Pro 5,1 running Mavericks.

    That's a good question about warm restart vs. cold reboot, I am not entirely sure. It is gone right now, so I might try just a warm restart to see if it comes back.

    EDIT: Ok, yes, a warm reboot just brought it back.
     
  4. h9826790 macrumors G5

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #4
    The stock WD Black 500GB HDD?
     
  5. msintros thread starter macrumors member

    Joined:
    Jul 7, 2014
    #5
    System profiler says it's a Hitachi HDS7250SASUN500G
     
  6. orph macrumors 68000

    orph

    Joined:
    Dec 12, 2005
    Location:
    UK
    #6
    it may be about to die, id back up the data on it.
    or it may just not be plunged in correctly, try removing then reinserting the drive by hand.
     
  7. h9826790 macrumors G5

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #7
    Agree, and better try to install into another slot
     

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6 September 18, 2017