Initially, all system resources are allocated to the control domain. To allow the creation of other logical domains, you must release some of these resources.
Do not attempt to use memory dynamic reconfiguration (DR) to perform the initial configuration of the control domain. Although you can use memory DR to perform this configuration without needing a reboot, the memory DR approach might take a very long time (longer than a reboot) and could even potentially fail. Instead, use the ldm start-reconf command to place the control domain in delayed reconfiguration mode before you change the memory configuration. Then, you can reboot the control domain after you complete all the configuration steps.