diff --git a/docs/notes/xxx.md b/docs/notes/xxx.md
index 4d9fdd1..7803c21 100644
--- a/docs/notes/xxx.md
+++ b/docs/notes/xxx.md
@@ -4,3 +4,10 @@ sudo rm -f /var/lib/dbus/machine-id
 sudo systemd-machine-id-setup
 ```
 change to unactive.
+
+```
+sudo rm -f /etc/machine-id
+sudo dbus-uuidgen -ensure=/etc.machine-id
+sudo rm -f /var/lib/dbus/machine-id
+sudo dbus-uuidgen -ensure
+```