How to update to newest mac OS High Sierra from older mac pro with Lion X

Quick tutorial on update to Os High Sierra from later model mac pro 2011-2012 with pre-instlalled Lion X 10.7.5.

Do know that the Lion X OS is not the same as the Mountain Lion OS X.

Step 1: You need to purchase and download from Lion X to Mountain Lion X first.

Step2: Once you have Installed Mountain Lion X (10.8), you then can upgrade to the High Sierra Os for Free.

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