WD Essentials 1TB Hard Drive - Invalid Node Structure - Need to Format (HOW?)

Discussion in 'Mac Accessories' started by The Valeyard, Dec 31, 2009.

  1. The Valeyard macrumors member

    Apr 26, 2009
    I've been using this external hard drive since Christmas Day and suddenly it doesn't work. I attempted to verify my disk and it came back with "Invalid Node Structure". I've been using this for Time Machine Backups but I don't mind losing them because there isn't really anything majot but I'm currently copying my two largest folders off there because it tells me I need to format my disk as soon as possible. How do I do that?
  2. sushi Moderator emeritus


    Jul 19, 2002
    If your question is how to format your external HD, then look for Disk Utility.

    It's in your Utilities folder.
  3. The Valeyard thread starter macrumors member

    Apr 26, 2009
    Sorry, the questions were, "Does anyone know what's gone wrong?" and "How do I format my disk?" Sorry, I didn't actually ask those questions. But once in Disk Utility, what do I do?
  4. Macintosh.Ninja macrumors newbie

    Sep 8, 2009

    In DiskUtility, just click the drive on the left you wish to format, then itll say 1st aid, erase... etc, click ERASE, then rename it, then change to MAC OS EXTENDED (JOURNALED) then click erase at the bottom :)

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