Also, you can create a Time Machine backup of your computer. However, you can back your data manually to an external hard drive or USB flash drive. Usually, upgrading your MAC OS does not affect your personal files. Below is my response with some instructions. Canon recommended upgrading MAC OS 10.9.5 Mavericks to at least MAC OS X 10.10 Yosemite. In order to plot in octave-cli everyone states that I should just 'set terminal x11' BUT I don't even have x11 listed when I run 'set terminal' in gnuplot. I restarted my computer after all was done.
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