I have recently made threads about problems with my mac mini, and have been thinking about osx. My mini originally came with lion, then I went to mountain lion, and then from mountain lion I went to el capitan, does skipping an osx cause problems? should I have first gone to Yosemite first before el capitan? All I know is after going from mountain lion to el capitan, is when my problems/shutdowns started, my wacom pointer would get disabled for a few seconds after waking my mac mini from sleep, even after I downloaded and installed their 10.11 drivers. And then the shutdowns started, and now it does not boot at all, I cannot even boot to any disk modes like recovery disk utility etc, before it just shuts down. I even notice that my wacom pointer is jittery in in el capitan on my macbook pro retina 2014. On this, I went from yosmite to el capitan. does anybody have any experience or good experiences with wacom tablets and yosmite or el capitan? I am at a bit of a loss as to what to do about it.