Upgrade From Older macOS To Catalina & Big Sur

Many Mac users do not jump on the macOS upgrade bandwagon like the rest of us. They are comfortable running older versions of macOS like SnowLeopard, Lion, Mavericks, etc. If you are running one of those operating systems, you really cannot upgrade to macOS Catalina or Big Sur seamlessly. If you are thinking about doing that, then read this article which lists different workarounds that will allow you to upgrade to Catalina or Big Sur from older Mac operating systems.