diff --git a/How-uConsole-CM4-OS-image-made.md b/How-uConsole-CM4-OS-image-made.md
index 4dc6c7a..70be602 100644
--- a/How-uConsole-CM4-OS-image-made.md
+++ b/How-uConsole-CM4-OS-image-made.md
@@ -4,6 +4,10 @@ Since the uConsole and devterm are using the same main board
 
 Just need to update a new kernel for the uConsole LCD screen
 
+original create os image from scratch is here:
+
+https://github.com/clockworkpi/DevTerm/wiki/Create-DevTerm-CM4-OS-image-from-scratch
+
 ## Kernel
 
 https://github.com/clockworkpi/uConsole/tree/master/Code/patch/cm4/20230630