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

**Table 1** ECS configurations
OS	Configuration	Reference
Windows	Set the NIC to DHCP. Enable remote desktop connection. (Optional) Install Cloudbase-Init. Install the Guest OS drivers, including the PV driver and UVP VMTools. Run Sysprep.	Creating a System Disk Image from a Windows ECS
Linux	Set the NIC to DHCP. (Optional) Install Cloud-Init. Delete files from the network rule directory. Change the disk identifier in the GRUB configuration file to UUID. Change the disk identifier 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	Set the NIC to DHCP. Enable remote desktop connection. Install the Guest OS drivers, including the PV driver and UVP VMTools. (Optional) Install Cloudbase-Init. (Optional) Enable NIC multi-queue.	Preparing an Image File
Linux	Delete files from the network rule directory. Set the NIC to DHCP. Install native Xen and KVM drivers. Change the disk identifier in the GRUB configuration file to UUID. Change the disk identifier in the fstab file to UUID. Delete the automatic attachment information 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