+d-i partman/early_command string \
+ debconf-set partman-auto/disk "$(readlink -f {{ hostvars[hostname].install_cooked.disks.primary }})"; \
+ debconf-set grub-installer/bootdev "$(readlink -f {{ hostvars[hostname].install_cooked.disks.primary }})"; \
+ umount -l /media || true
+
+d-i grub-installer/choose_bootdev string manual
+d-i grub-installer/bootdev seen true
+