HiDPI refers to a mode in OS X Lion and subsequent versions that forces OS X to render UI elements at double the normal resolution. The mode was disabled until the release of the retina MacBook Pro in the summer of 2012, which has enough pixels to display HiDPI mode correctly
I'm wondering if there is a way to change the OSX system font size per monitor (e.g. larger for Retina and smaller on external display) ? I know how to change it system wide (as covered by How can I ...
In #53770 (and similar questions), I and a few others were unable to switch to a HiDPI mode in Lion, even on a Mac and Mac OS X that otherwise seem capable of supporting it. For anyone who was in the ...