diff --git a/install/VMimage/OracleLinux.md b/install/VMimage/OracleLinux.md
index 18bf219d..d535986c 100644
--- a/install/VMimage/OracleLinux.md
+++ b/install/VMimage/OracleLinux.md
@@ -6,10 +6,15 @@
 - User can user password or key both for create VM or reset password
 - OS start methond on Cloud: BIOS/UEFI
 - Disk partition: LVM/?
-- Softwares: cloud-init, agent of Cloud provider
+- File system type: FAT32、EXT2、EXT3、EXT4、UFS?
+- Softwares: cloud-init, agent of Cloud provider, virtio, NVMe, 
 - Other config: https://github.com/Websoft9/mcloud/blob/master/ansible/roles/desktop/tasks/image.yml
 - Applicaitons: Desktop, Docker/Podman, Java
 
 ## Upgrade
 
 You can use [leapp](https://docs.oracle.com/en/learn/ol-linux-leapp) to upgrade major version, e.g Oracle Linux8 > Oracle Linux9
+
+## Test tools
+
+- [阿里云 sersi](https://help.aliyun.com/zh/ecs/user-guide/check-whether-an-image-meets-the-import-requirements)