How to securely wipe External Hard Drive before returning?

Discussion in 'macOS' started by oneinten, Dec 4, 2013.

  1. oneinten macrumors member

    Mar 16, 2013

    I've had my external HD for around for around 4 hours now and it's started grinding and making strange noises so I'm returning for a replacement. However, I already have hundreds of family photos and work documents on their that I want to erase (Securely)

    I've used KillDisk on a Windows machine once before. How can I securely wipe all traces of data from it on my Mac before exchanging it?

    Many thanks
  2. Macman45 macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
  3. oneinten thread starter macrumors member

    Mar 16, 2013
    haha brilliant, thanks for that. I'm fairly new to Mac's tools/utilities so I wasnt sure if I needed a 3rd party app. Will simply zero-ing out the disk with one pass of 0's be enough to wipe my pictures and documents from retrieval.

    (not that I expect anyone to try.. but I'm a bit paranoid about identity theft these days)

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