Quote:
I run LM 17.2 from a live USB (without persistence)
|
When you log in to a Mint Live usb, you should be logged in as the user mint without administrative privileges. You get administrative privileges by prefacing a command with sudo so don't use sudo. Of course, anyone with access to the machine can use sudo if they are aware as there is no password.
Live CDs/USBs were designed for people to use to install or try out an operating system so if you want a really secure system set to your modifications, a Live usb is not the way to go. On the system you describe without persistence, any changes you make will be lost on reboot and that is the way it is meant to be by design.