set system image default-boot: <image-name>
Selects an image to be run when the system is next rebooted.
If the command is used without specifying an image name, the system displays a list of available images and prompts you to select one.
<image-name>- Name of an image to be run when the system is rebooted.
Operational mode
Use this command to select an image to run when the system is next rebooted.
When multiple system images have been installed by using add system image, you can use this command to direct the system to boot from a specific system image the next time the system is restarted.
Command completion displays all valid completions for the image-name argument. If the image-name argument is omitted, the system displays a list that shows all images that are installed on the system and prompts you to select one. If the system was originally installed in disk-based mode, a special image-name option is available so that you can select the disk-based system as the default system from which to boot.