How can I login the same account when start Linux, cause each time I shutdown the Linux(A liveUSB), all the documents were gone when restart again.
I want to set an account when each time I start the system I can login the Account which can store my files.
A LiveUSB does not save data. It is meant to test out and or recover data to an external hard-drive.
Your files are gone.
Due note that some specific USB are able to save data made with a liveUSB, but that depends how you created that USB.
The Ubuntu Startup creator has an option, to reserve X amount of GB for storage purposes. To the best of my knowledge the Ubuntu Startup creator is the only one with this features. Feel free to correct me here.
