Will installing ML to a 2nd HDD mess up current install?

Discussion in 'OS X Mountain Lion (10.8)' started by bitterdone, Jun 5, 2013.

  1. bitterdone macrumors newbie

    Jul 19, 2012
    I want to install ML onto a spare HDD. If I create a bootable usb installer, tell my iMac to boot from it, and install ML to the HDD, will anything bad happen to the iMac's current OS X installation?

    I'd be using a usb HDD Dock ("toaster") to connect my spare HDD. I think the iMac has Snow Leopard, if it matters.
  2. simsaladimbamba

    Nov 28, 2010
    It will not damage the current install if you select and format the correct HDD during the installation.
  3. bitterdone thread starter macrumors newbie

    Jul 19, 2012
    Thanks for the response. To you and anyone else wondering, I just finished and the original install is fine.

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