-echo 'grub-efi-arm64 grub2/force_efi_extra_removable boolean false' | chroot /target debconf-set-selections
-chroot /target apt-get remove grub-efi-arm64-signed
+echo 'grub-efi-arm64 grub2/force_efi_extra_removable boolean true' | chroot /target debconf-set-selections
+chroot /target apt-get remove -y grub-efi-arm64-signed
+chroot /target apt-get install -y ntpdate
+chroot /target grub-install --removable /boot/efi