What happens if you remove the USB? https://www.rants.org/2014/09/debian_install_solving_grub_error/
https://trisquel.info/en/forum/netinstall-0#comment-94864
What happens if you remove the USB? https://www.rants.org/2014/09/debian_install_solving_grub_error/
https://trisquel.info/en/forum/netinstall-0#comment-94864