03-09-2018, 07:49 AM
this is why rpi is not doing you any favors. rpi attempts to make life easy for you and in the process removes you from learning about a lot of what is involved with having a linux o/s. when you first boot rock64 there is a user account called rock64. so first account is there. since you do not mention which version of linux you have it's hard to say what else except you might want to start reading about the operation of a basic linux operating system and learn about how things work outside of rpi.