Every Operating System Explained in 20 Minutes

Every Operating System Explained in 20 Minutes! Every major operating system explained — and the insane origin stories behind them. From the OS running your phone to the one powering Netflix, PlayStation, and the International Space Station. Some you use every day. Some you've never heard of. All of them are more interesting than you think. Operating Systems Covered: ✅ Windows – The most used OS on earth, Blue Screen of Death and all. ✅ KaiOS – 100 million users. Built on a dead Mozilla project. Running on an $18 phone. ✅ HarmonyOS – Built in 3 months after a US government ban. Now on 900 million devices. ✅ macOS – A $427 million purchase that accidentally brought Steve Jobs back to Apple. ✅ FreeBSD – The invisible OS quietly running Netflix, PlayStation, and WhatsApp. ✅ Android – Originally built for cameras. Now runs 3 billion devices. ✅ ChromeOS – Everyone called it useless in 2011. Then everything moved online. ✅ iOS – Steve Jobs said no to the App Store. Someone called him 6 times to change his mind. ✅ SteamOS – Failed publicly in 2013. Kept building in secret. Came back as the Steam Deck. ✅ Linux – A 21-year-old called it "just a hobby." It now runs 90% of the world's servers.