Disk Utility - Writing Zeros Problem

Discussion in 'macOS' started by koosh1986, Dec 31, 2011.

  1. koosh1986 macrumors newbie

    Dec 22, 2011
    Im trying to write zeros over an external hard drive with disk utility but the drive keeps ejecting itself about 20 min into the process. The drive had many "corrupt" files in it so this is why im trying to write zeros on it to find and remove any damaged parts. any ideas on how to fix this? or any alternatives to disk utility for writing zeros? I also have access to a windows computer.

    2011 mbp - lion
  2. koosh1986 thread starter macrumors newbie

    Dec 22, 2011
    another question

    My other question would be (probably a stupid one) if I do use a windows program to write the zeros but then reformat it for mac os extended (journaled) will the effect of the zeroing still remain? In other words would these bad sectors of the disk that get removed by zeroing the disk remain removed?
  3. Mal macrumors 603


    Jan 6, 2002
    You can try it from a Windows computer, but it sounds likely to me that you have a bad hard drive (probably the controller or a power issue, not just bad sectors). I would replace the drive, no way I would ever depend on it again.


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