diff --git a/content/en/docs/installing-on-linux/introduction/multioverview.md b/content/en/docs/installing-on-linux/introduction/multioverview.md
index bb4314e3a..7ce2bda8f 100644
--- a/content/en/docs/installing-on-linux/introduction/multioverview.md
+++ b/content/en/docs/installing-on-linux/introduction/multioverview.md
@@ -178,7 +178,7 @@ A default file `config-sample.yaml` will be created if you do not change the nam
 
 {{< notice note >}}
 
-To customize Kubernetes related parameters please refer to [Kubernetes Cluster Configurations](../vars/).
+To customize Kubernetes related parameters, refer to [Kubernetes Cluster Configurations](../vars/).
 
 {{</ notice >}}
 
@@ -235,7 +235,8 @@ List all your machines under `hosts` and add their detailed information as above
 
 {{< notice tip >}} 
 
-Before you install KubeSphere, you can use the information provided under `hosts` (for example, IP addresses and passwords) to test the network connection between the taskbox and other instances using SSH.
+- Before you install KubeSphere, you can use the information provided under `hosts` (for example, IP addresses and passwords) to test the network connection between the taskbox and other instances using SSH.
+- Make sure port 6443 is not being used by other services before the installation. Otherwise, it may cause conflicts as the default port of the API server is 6443.
 
 {{</ notice >}}
 
diff --git a/content/en/docs/project-user-guide/storage/volumes.md b/content/en/docs/project-user-guide/storage/volumes.md
index 5c5d46b9b..58ea081f0 100644
--- a/content/en/docs/project-user-guide/storage/volumes.md
+++ b/content/en/docs/project-user-guide/storage/volumes.md
@@ -156,7 +156,7 @@ From the **More** drop-down menu, there are three additional options provided by
 
 - Clone a volume: Create a same volume.
 - Create a volume snapshot: Create a volume snapshot which can be used to create volumes. For more information, see [Volume Snapshots](../volume-snapshots/).
-- Expand a volume: Increase the size of a volume.
+- Expand a volume: Increase the size of a volume. Keep in mind that you cannot reduce the size of a volume on the console due to possible data loss. 
 
 ![volume-detail-page](/images/docs/project-user-guide/volume-management/volumes/volume-detail-page.jpg)
 
diff --git a/content/zh/docs/installing-on-linux/introduction/multioverview.md b/content/zh/docs/installing-on-linux/introduction/multioverview.md
index 355de685c..63377d74a 100644
--- a/content/zh/docs/installing-on-linux/introduction/multioverview.md
+++ b/content/zh/docs/installing-on-linux/introduction/multioverview.md
@@ -250,7 +250,8 @@ spec:
 
 {{< notice tip >}} 
 
-在安装 KubeSphere 之前，您可以使用 `hosts` 下提供的信息（例如 IP 地址和密码）通过 SSH 的方式测试任务机和其他实例之间的网络连接。
+- 在安装 KubeSphere 之前，您可以使用 `hosts` 下提供的信息（例如 IP 地址和密码）通过 SSH 的方式测试任务机和其他实例之间的网络连接。
+- 在安装前，请确保端口 6443 没有被其他服务占用，否则在安装时会产生冲突（6443 为 API 服务器的默认端口）。
 
 {{</ notice >}}
 
diff --git a/content/zh/docs/project-user-guide/storage/volumes.md b/content/zh/docs/project-user-guide/storage/volumes.md
index 43a914d31..ef1a6e22b 100644
--- a/content/zh/docs/project-user-guide/storage/volumes.md
+++ b/content/zh/docs/project-user-guide/storage/volumes.md
@@ -155,7 +155,7 @@ kubectl patch pvc <pvc-name> -p '{"metadata":{"finalizers":null}}'
 
 - **存储卷克隆**：创建一个相同的存储卷。
 - **创建快照**：创建一个存储卷快照，可用于创建其他存储卷。有关更多信息，请参阅[存储卷快照](../volume-snapshots/)。
-- **存储卷扩容**：增加存储卷的容量。
+- **存储卷扩容**：增加存储卷的容量。请注意，您无法在控制台上减少存储卷的容量，因为数据可能会因此丢失。
 
 ![volume-detail-page](/images/docs/zh-cn/project-user-guide/volume-management/volumes/volume-detail-page.jpg)