image boot.vfat { vfat { files = { "kernel", "stm32f746-disco.dtb", "extlinux" } } size = 16M } image sdcard.img { hdimage { } partition boot { partition-type = 0xC image = "boot.vfat" } partition rootfs { partition-type = 0x83 image = "rootfs.ext" size = 32M } }