# Viewing the Virtualization Type of a Windows ECS

Open the cmd window and run the following command to query the virtualization type of the ECS:

systeminfo

If the values of System Manufacturer and BIOS Version are Xen, the ECS uses Xen. If KVM is required, perform the operations in this section to optimize a Windows private image.

If the ECS uses KVM, you are also advised to optimize the private image to prevent any exceptions with the ECSs created from the image.

Figure 1 Viewing the virtualization type of a Windows ECS
Parent topic: Optimizing a Windows Private Image