Unable to create a USB Install Drive

[zabadabadoo]

Note: Important Warning from @Aravisian for those that install popsicle and leave the Repository in place. See here:

Popsicle burner

You can install Popsicle burner, now. Currently, you are still safe. But... Once Popsicle is installed: You Absolutely Must Now Remove that Repository If you forget, the next time you run updates, you will break Zorin OS when the system tries to upgrade to the different packages used by POP_OS. That is unsafe. Remove with: sudo add-apt-repository --remove ppa:system76/pop