I have been struggling with this for a few days and still am. When I downloaded Ubuntu Mate 18 and installed it on an sdc card using etcher I got two file systems: /root and /boot. I could locate files like /boot /usercfg.txt and edit it. Howerver when I download Ubuntu Mate 19.10 and installed it on an SDC card using etcher I get: "Ubuntu-MATE 19.10 amd64". No /boot or /root/ . Now if I want to take this SDC card or thumb drive with "Ubuntu-MATE 19.10 amd64" and install it on my laptop I can hit F12 during boot and tell the laptop to boot from the thumb drive. Ubuntu Mate 19 will then "allow me to take a tour" or install it. Now for the question. On a Raspberry Pi 4 I do not think that pressing F12 during boot/startup will allow the option to boot from usb. And so far I cannot get a Pi 4 to boot with Ubuntu Mate 19.10. I know about the usb "problem" but cannot locate the ussercfg.txt file after installing with etcher. Any ideas/recommendations. i
I seems that the new installation method is to boot from a thumb drive and interrupt the boot process so that you can access the Ubuntu 'live' installation by hitting F2 or F12, picking your usb device and then taking a tour or installing. If I am correct how will this work with a Pi since they do not have a bios.
Thank you. Any and all suggestions welcome.