how to format external hd after you use it in the time machine ?

Discussion in 'macOS' started by Luigi Ventura, Apr 3, 2012.

  1. Luigi Ventura, Apr 3, 2012
    Last edited: Apr 3, 2012

    Luigi Ventura macrumors newbie

    Joined:
    Apr 3, 2012
    #1
    installed my 500gb external hard drive (model WD External Media 5000BEV) to use it in the time machine on my macbook pro with mac osx system. Now I dont want the time machine anymore, i want to format it to use it at work. and the system complains: Could not unmount the disk . I've tried almost everything, I do not know what else to do. thanks in advance .
     
  2. ScoobyMcDoo macrumors 65816

    Joined:
    Nov 26, 2007
    Location:
    Austin, TX
    #2
    If you tell us what "everything" is, it would be helpful.

    But just in case this is not part of "everything", did you turn off time machine?
     

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