Do you ever heard about Cosmos, OS dev kit COSMOS - COSMOS (gocosmos.org).
What do you think about this project ? Creating Managed OS with C#
I am trying to add some library like Glide and others but so many missing basic library, data types, and so on.
Check the repo: Gravicode/BMC.BEOS: This is experimental OS built with .NET AOT (github.com)