pi_install_script

KERNEL=kernel7

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig
make -j 4 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- zImage modules dtbs

sudo mount /dev/sdb6 ~/mnt/fat32/
sudo mount /dev/sdb7 ~/mnt/ext4/

sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- INSTALL_MOD_PATH=~/mnt/ext4 modules_install

sudo cp ~/mnt/fat32/$KERNEL.img ~/mnt/fat32/$KERNEL-backup.img
sudo scripts/mkknlimg arch/arm/boot/zImage ~/mnt/fat32/$KERNEL.img

sudo cp arch/arm/boot/dts/*.dtb ~/mnt/fat32/

sudo cp arch/arm/boot/dts/overlays/*.dtb* ~/mnt/fat32/overlays/
sudo cp arch/arm/boot/dts/overlays/README ~/mnt/fat32/overlays/

sudo umount ~/mnt/fat32/
sudo umount ~/mnt/ext4/