how to convert a value type to byte[] in C#?

I want to do the equivalent of this:

byte[] byteArray;
enum commands : byte {one, two};
commands content = one;
byteArray = (byte*)&content;

yes, it’s a byte now, but consider I want to change it in the future? how do I make byteArray contain content? (I don’t care to copy it).

how to convert a value type to byte[] in C#?