-#define CONFIG_BOOT_ROOT_INITRD 0 /* Use ram disk for the root file system */
-#define CONFIG_BOOT_ROOT_NFS 1 /* Use a NFS mounted root file system */
+#undef CONFIG_BOOT_ROOT_INITRD /* Use ram disk for the root file system */
+#define CONFIG_BOOT_ROOT_NFS /* Use a NFS mounted root file system */