Can My Mac Run macOS Big Sur? Share October 4, 2020 Dm4r Technology macOS Big Sur is the latest version of Apple’s desktop operating system. It will likely available as a free upgrade to Mac owners in October 2020. With this release, some Macs that run Catalina are being left behind and won’t be able to upgrade. Read This Article on How-To Geek › Source : Can My Mac Run macOS Big Sur?