External hard drive boot not showing Mac OSX

  dfffffffdfgdfgdfg 14:32 16 Sep 2015

So I'm trying to install Yosemite from an external hard drive. Upon boot (using option key) to select base system OX the screen loads to where a pop up of what should be 'install yosemite' instructions don't appear

I have tried rebooting and re installing and nothing

Really need your help!

  Macworld 10:15 17 Sep 2015

Not sure if this tutorial will help with your particular case: click here did you load Yosemite on to the disk - did you make it into a boot drive?


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