config BR2_TARGET_ROOTFS_INITRAMFS bool "initramfs for initial ramdisk of linux kernel" depends on BR2_LINUX_KERNEL help Integrate the root filesystem generated by Buildroot as an initramfs inside the kernel image. This integration will take place automatically. The rootfs.initramfs file generated in the images/ directory is only a text file describing the contents of the initramfs in a format understood by the CONFIG_INITRAMFS_SOURCE kernel configuration option. Note that enabling initramfs together with other filesystem formats doesn't make sense: you would end up having two identical root filesystems, one embedded inside the kernel image, and one separatly. comment "initramfs requires a Linux kernel to be built" depends on !BR2_LINUX_KERNEL