Update README.md

cfenollosa · web-flow · commit ce8e050d2465 · 2023-09-19T17:35:22.000+02:00
Closes cfenollosa#269
diff --git a/README.md b/README.md
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 os-tutorial
 ===========
 
+_⚠️ Hey! This is an old, abandoned project, with both technical and design issues [listed here](https://github.com/cfenollosa/os-tutorial/issues/269). Please have fun with this tutorial but do look for more modern and authoritative sources if you want to learn about OS design. ⚠️_
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 How to create an OS from scratch!
 
 I have always wanted to learn how to make an OS from scratch. In college I was taught
