You can remove it as long as it's not in use. I'm sorry you are feeling frustrated, but think how much you have learned today. It's a lot to absorb all at once. We are basically done, and once you get used to it it will be super easy.Maybe we should call it quits for now, but the whole point of having the linux executable on a removeable device is to prevent computer use unless it's plugged in. The 'system' is a 2-step authentication, requiring 2 passwords, but one must be generated from the thumbdrive executable. If I can't remove the thumbdrive and take it to another computer, I've defeated the purpose LastPass.