Skip navigation
This discussion is archived

External Hard drive wont mount

1761 Views 5 Replies Latest reply: Jun 28, 2010 4:56 PM by Pondini RSS
jgatto Calculating status...
Currently Being Moderated
Jun 28, 2010 3:27 PM
I have 4 WD external hard drives, I came home this evening to find out we lost power, I turned on my iMac only to find 1 out of 4 hard drives are mounted , 1 works 1 is lit but not mounted 2 have no lights on and they are all plugged into a surge protector. I tried re-booting but same results any help would be greatly appreciated.
IMAC
  • Pondini Level 8 Level 8 (38,710 points)
    Currently Being Moderated
    Jun 28, 2010 4:21 PM (in response to jgatto)
    jgatto wrote:
    I have 4 WD external hard drives, I came home this evening to find out we lost power, I turned on my iMac only to find 1 out of 4 hard drives are mounted , 1 works 1 is lit but not mounted 2 have no lights on and they are all plugged into a surge protector.


    That should protect you against spikes, but not dips or power failures, which can damage the directory structure, especially if they were being written-to when the power failed or dipped.

    Try repairing them with Disk Utility (in your Applications/Utilities) folder.

    Do yourself a large favor -- get a U.P.S. system. You can now get one with a USB cable that connects to your Mac for under $70. It will run your Mac (and external HD, modem, etc, but not a printer) for at least a few minutes, and will signal OSX (via the USB cable) when it's switched from utility power to battery, so OSX can do a controlled power-down.

    Thus you're protected against both surges and dips in power, and your Mac won't have an abnormal shutdown when they occur.

    When you connect the USB cable, you'll get a new set of options in System Preferences > Energy Saver, where you can tell OSX when to do the shutdown -- after a specified number of minutes on battery; and/or when the battery is at a specified percentage; and/or when there's a specified number of minutes left on battery power.
    24" iMac 9,1 2.66 GHz; 4gb; 640 gb, Mac OS X (10.6.4), dual-band AEBS v. 7.4.2
  • Pondini Level 8 Level 8 (38,710 points)
    Currently Being Moderated
    Jun 28, 2010 4:34 PM (in response to jgatto)
    jgatto wrote:
    how can i "Try repairing them with Disk Utility (in your Applications/Utilities) folder" if it wont mount...there is nothing there in disk utility except the one i have working


    You didn't say that.

    In that case, try different port(s) and cable(s) and combinations; and plug them into a known good outlet. If there are any "reset" buttons on the drives, use them.

    If still no help, they're most likely toast.

    As a last resort, try them with a different computer; Contact WD; or take them to an Apple Store or Authorized Repair location.
    24" iMac 9,1 2.66 GHz; 4gb; 640 gb, Mac OS X (10.6.4), dual-band AEBS v. 7.4.2
  • Pondini Level 8 Level 8 (38,710 points)
    Currently Being Moderated
    Jun 28, 2010 4:56 PM (in response to jgatto)
    Great! Thanks for the feedback.
    24" iMac 9,1 2.66 GHz; 4gb; 640 gb, Mac OS X (10.6.4), dual-band AEBS v. 7.4.2

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.