The Linux kernel is written in C. The Windows 11 kernel is written in x86 assembler if you want an OS not written in C.
!5 My new article.!
*Why I stopped using Linux*
https://handbook.uhden.dev/articles/why-i-stopped-using-linux.html
*Why I stopped using Linux*
https://handbook.uhden.dev/articles/why-i-stopped-using-linux.html