Me too: Grub installation failed" and the text below it says: " The 'grub-efi-amd64-signed' package failed to install into / target/. Without boot loader the installed system will not boot."
Me too: Grub installation failed" and the text below it says: " amd64-signed' package failed to install into / target/. Without boot loader the installed system will not boot."
The 'grub-efi-