Homebrew How do I swap emunand and sysnand in a9lh? which one should i use? how do i load them on boot?

[richardparker]

I want to install a9lh and im confused- how will i load sysnand is i load emunand on boot? how do i swap them? how do i make an emunand? should i? what is more risky?
thank you very much.