--- stage2.orig/rootfs/boot/cmdline.txt
+++ stage2/rootfs/boot/cmdline.txt
@@ -1 +1 @@
-console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait
+console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait quiet init=/usr/lib/raspi-config/init_resize.sh

--- stage2.orig/rootfs/boot/cmdline.txt
+++ stage2/rootfs/boot/cmdline.txt
@@ -1 +1 @@
-console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait
+console=serial0,115200 console=tty1 root=ROOTDEV rootfstype=ext4 fsck.repair=yes rootwait quiet init=/usr/lib/raspberrypi-sys-mods/firstboot

Switch to sys-mods' firstboot script
Switch to sys-mods' firstboot script
