You can download old versions of macOS from the Mac App Store or as direct downloads from Apple's website. Create a bootable USB drive using the installer Application ...

A back end change to the Mac App Store appears to have shut out users of macOS Sierra and older versions, blocking not just purchases, but also downloads of software already bought.

macOS 10.13 High Sierra is the fourteenth version of macOS, and the follow up to macOS Sierra. Much like how OS X Snow Leopard was a refinement of OS X Leopard, macOS High Sierra is highly ...