From a0a98f9954090f7ef9948f7e262d3c10114d09c9 Mon Sep 17 00:00:00 2001
From: aiminick <83101338@qq.com>
Date: Mon, 25 Jan 2021 22:15:26 +0800
Subject: [PATCH] Update README.md

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 4ca53f1..72c5c01 100644
--- a/README.md
+++ b/README.md
@@ -1415,6 +1415,10 @@ systemctl mask  bluealsa.service
 
 **Note**： Here U must use **"mask"** for unactive bluealsa.service, mustn't use **"disable"** !!
 
+#### 3-16.5 USB mass storage boot problem
+
+If you met a problem from USB mass storage to boot, pls read [here](#.//docs/pi4-usb-boot-problems.md) to fix the problem.
+
 ### 3-17. Extra Application Instructions
 
 #### 3-17.1 WPS Office Arm 64-bit Desktop Installation Note