What makes C suitable for low level programming is not only lack of GC, but lack of global heap at all. Global heap is just a library thing. You can decide to a

What makes C suitable for low level programming is not only lack of GC, but lack of global heap at all. Global heap is just a library thing. You can decide to alloc on a stack or use a particular memory region for allocation. Also you routinely copy between user and kernel spaces for security. This is totally different then global GC and global heap approach of c#. All works around this problem is basically getting away from C# so could you still call it OS written in C# when this problems were solved?