In one approach, one or more computer processors provision an instance in a cloud computing environment, wherein the instance includes one or more local disks. The one or more computer processors boot the instance from a boot image such that an operating system exists in a main memory of the instance. The one or more computer processors copy an image file to the one or more local disks of the instance, where copying the image file overwrites the one or more local disks. The one or more computer processors reboot the instance.