Persistence

persistence.png Questions about the persistence feature. Here, you will find what it is and how it works.
1 What is persistence?
2 What can I do and not do on a persistent system?
3 Why can't I have more than 4GB of persistent data with LiLi?
4 How can I have more than 4GB of persistent data?
5 How to check if the persistence is working?
6 Can I backup or re-use my persistent data?