I am trying to install ubuntu on my MacBook Air. I am following these indications : https://support.fleet.co/hc/fr/articles/5661642629277-Comment-installer-Linux-sur-un-Mac-Guide-complet-pour-remplacer-macOS-par-Ubuntu I am at the step : Create a Live USB and I have some problems. I think I was able to unmount the disk but when I do the command "copy", the terminal answer "command not found". How can I do?
Then, I tried to open my MAc with "Alt" to get the "EFI boot" screen but instead of it, I have the image of the internal disk and the possibility to connect at a wifi. How to have the EFI boot option? Thank you for your answers!
Albane