Question about Mountain Lion and external hard drive

Discussion in 'Mac Basics and Help' started by Cvadh387, Jul 27, 2012.

  1. Cvadh387 macrumors member

    May 22, 2012
    I am about to upgrade to Mountain Lion. I have already backed up my stuff with an external hard drive using Time Machine. Do I need to to keep my external hard drive plugged in while I am upgrading to Mountain Lion? Thanks in advance for all your help!

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