How Do I Configure an ECS or an Image File Before I Use It to Create an Image?

**Table 1** ECS configurations
OS	Configuration	Reference
Windows	Configure DHCP. Enable remote desktop connection. (Optional) Install Cloudbase-Init. Install Guest OS drivers (PV and VirtIO drivers). Run Sysprep.	Creating a System Disk Image from a Windows ECS
Linux	Configure DHCP. (Optional) Install Cloud-Init. Delete files from the network rule directory. Change disk identifiers in the GRUB file to UUID. Change disk identifiers in the fstab file to UUID. Install native Xen and KVM drivers. Detach data disks from the ECS.	Creating a System Disk Image from a Linux ECS

**Table 2** Image file configurations
OS	Configuration	Reference
Windows	Configure DHCP. Enable remote desktop connection. Install Guest OS drivers (PV and VirtIO drivers). (Optional) Install Cloudbase-Init. (Optional) Enable NIC multi-queue.	Preparing an Image File
Linux	Delete files from the network rule directory. Configure DHCP. Install native Xen and KVM drivers. Change disk identifiers in the GRUB file to UUID. Change disk identifiers in the fstab file to UUID. Delete the automatic mount configuration of non-system disks from the /etc/fstab file. (Optional) Install Cloud-Init. (Optional) Enable NIC multi-queue.	Preparing an Image File

When registering an external image file as a private image, you are advised to perform the preceding operations on the VM where the external image file is located.
When registering a Windows external image file as a private image, if the Guest OS drivers are installed, the cloud platform will check the image file after you select Enable automatic configuration. If the GuestOS drivers are not installed, the cloud platform will try to install them.

Parent topic: Image Optimization