Now the shell script that assembles the TARDIS is git-ed, 1st version.

assemble_image.sh

+#!/bin/bash
+
+set -x
+
+image_size="3G"
+iso_file="ubuntu-18.04.1-desktop-amd64.iso"
+
+# mtools, ddrescure, fdisk, grub, 7z
+
+rm -rf part_files
+mkdir -p part_files
+git -C part_files clone https://git.fsmpi.rwth-aachen.de/osak/lipstick.git .
+#rsync -av /usr/lib/grub/x86_64-efi part_files/grub
+#mkdir -p part_files/efi/ubuntu
+#rsync -av /usr/lib/grub/x86_64-efi part_files/efi/ubuntu
+rsync -av /usr/lib/grub/i386-efi part_files/grub
+rsync -av /usr/lib/grub/i386-pc part_files/grub
+rsync -av /usr/share/grub/themes part_files/grub
+mkdir -p part_files/grub/fonts/
+rsync -av /usr/share/grub/unicode.pf2 part_files/grub/fonts/
+
+7z x "$iso_file" -opart_files EFI/
+7z x "$iso_file" -opart_files boot/grub/x86_64-efi
+
+mv part_files/grub/* part_files/boot/grub/
+rm -rf part_files/grub
+
+#wget -O part_files/gparted-live-i686.iso https://sourceforge.net/projects/gparted/files/gparted-live-stable/0.28.1-1/gparted-live-i686.iso
+wget -O part_files/gparted-live-i686.iso https://sourceforge.net/projects/gparted/files/gparted-live-stable/0.28.1-1/gparted-live-x86_64.iso
+ln "$iso_file" part_files/
+
+rm part.img
+truncate -s "$image_size" part.img
+mkfs.vfat -n "LIPSTICK" "part.img"
+MTOOLS_SKIP_CHECK=1 mcopy -i part.img -b -s -v part_files/* ::
+grub-mkimage --prefix "(hd0,msdos1)/boot/grub" --output "grub.i386-pc.img" --format "i386-pc" part_msdos fat ext2 biosdisk
+dd if=/usr/lib/grub/i386-pc/boot.img of="output.img" bs=446 count=1
+dd if="grub.i386-pc.img" of="output.img" bs=512 seek=1
+ddrescue --output-position=2048s --sparse "part.img" "output.img"
+printf "label: dos\nunit: sectors\n2048,+,b,*\n" | sfdisk "output.img"