diff --git a/docs/notes/xxx.md b/docs/notes/xxx.md
new file mode 100644
index 0000000..4d9fdd1
--- /dev/null
+++ b/docs/notes/xxx.md
@@ -0,0 +1,6 @@
+```
+sudo rm -f /etc/machine-id
+sudo rm -f /var/lib/dbus/machine-id
+sudo systemd-machine-id-setup
+```
+change to unactive.