External Hard Drives + Disk Utility Help

Discussion in 'macOS' started by Musicsquid, May 25, 2010.

  1. Musicsquid macrumors newbie

    Joined:
    Mar 27, 2010
    #1
    I'm sorry if this is the wrong area to be posting for this but this forum is unfamiliar territory for me.

    My external hard drive has been corrupted and the error message is telling me to reformat it. However, through all the research I have done to find out how, everything I've found has told me to use Disk Utility to just erase everything on the disk to do this.

    When I try to do this, it tells me that I can't erase anything because the disk cannot be unnmounted. What should I do?
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    Open Terminal and type "killall Finder" then try erasing it.
     
  3. Musicsquid thread starter macrumors newbie

    Joined:
    Mar 27, 2010
  4. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #4
    If that doesn't work, boot from the install disk and use its Disk Utility
     
  5. Musicsquid thread starter macrumors newbie

    Joined:
    Mar 27, 2010
    #5
    Thank you for your help! It worked perfectly!
     

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