how to use automatic-ubiquity or only-ubiquity to unattended pxe boot install ubuntu and linux mint

=http://192.168.40.1/{{inventory_hostname_short}}-preseed-ks-linuxmint19.cfg automatic-ubiquity boot=casper -- Kind regards, Jelle de Jong -- Ubuntu-installer mailing list Ubuntu-installer@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-installer

ubiquity ubiquity/success_command string to update-grub

-47.51_amd64.deb; \ chroot /target update-grub2; \ chroot /target grub-mkconfig -o /boot/grub/grub.cfg; Can somebody tell me why all my update-grub2 or grub-mkconfig commands are not working and suggest an solution? Kind regards, Jelle de Jong -- Ubuntu-installer mailing list Ubuntu