diff --git a/docs/others.md b/docs/others.md
index 3719cac..ac25e3f 100644
--- a/docs/others.md
+++ b/docs/others.md
@@ -19,3 +19,6 @@
       export XAUTHORITY=/var/lib/lightdm/.Xauthority
       glxinfo -B
 
+#### initrd
+
+      mkinitramfs -o /boot/initrd.img-$(uname -r)