Is this a C# written os ? Interesting …
I did not check the actual code but my first reaction would be, this is a shell, not an OS, it’s still C# on top off the CRL, on top off… yes indeed, an OS…
It’s an actual OS, booted by syslinux but from there completely independent. Uses IL2CPU to do machine-code translation of IL.
After a really short peek i must say, interesting indeed, strange how a mans mind makes this decisions based on inductions…
Interestingly enough, it’s not the only C# operating system. SharpOS, Singularity, and MOSA are other efforts along those lines.