diff --git a/ch2/user/src/bin/00hello_world.rs b/ch2/user/src/bin/00hello_world.rs
new file mode 100644
index 0000000..77ef2fc
--- /dev/null
+++ b/ch2/user/src/bin/00hello_world.rs
@@ -0,0 +1,8 @@
+#![no_std]
+#![no_main]
+
+
+#[no_mangle]
+fn main() {
+
+}
\ No newline at end of file