From d22bb22d2370e8685dda2bafb9b8e918b4eb7c73 Mon Sep 17 00:00:00 2001
From: Sheng Yang <sheng@yasker.org>
Date: Mon, 26 Mar 2018 11:07:59 -0700
Subject: [PATCH] Update README.md

Add cmd to delete all the volumes.
---
 README.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index fba0db1..724129b 100644
--- a/README.md
+++ b/README.md
@@ -202,7 +202,12 @@ See [Troubleshooting](#troubleshooting) for details.
 
 ## Uninstall Longhorn
 
-Longhorn can be easily uninstalled using:
+In order to uninstall Longhorn, user need to remove all the volumes first:
+```
+kubectl -n longhorn-system delete lhv --all
+```
+
+After confirming all the volumes are removed, then Longhorn can be easily uninstalled using:
 ```
 kubectl delete -f https://raw.githubusercontent.com/rancher/longhorn/v0.2/deploy/longhorn.yaml
 ```