The zoneadm command is the primary tool used to install and administer non-global zones. Operations using the zoneadm command must be run from the global zone on the target system.
How to Install the solaris10 Branded Zone A configured solaris10 branded zone is installed by using the zoneadm command with the install subcommand.
Example: global# zoneadm -z s10-zone install -a /net/machine_name/s10-system.flar -u

If a command is terminated by the control operator '&', the shell executes the command asynchronously in a subshell. This is known as executing the command in the background.
The shell does not wait for the command to finish, and the return status is 0 (true).

Note shutdown:
Shutdown is executed by the super user to change the state of the machine. In most cases, it is
used to change from the multi-user state (state 2) to another state.
By default, shutdown brings the system to a state where only the console has access to the
operating system. This state is called single-user.
Before starting to shut down daemons and killing processes, shutdown sends a warning message
and, by default, a final message asking for confirmation. message is a string that is sent out
following the standard warning message "The system will be shut down in ..." If the string contains
more than one word, it should be contained within single (') or double
(") quotation marks.
Note init:
If a 0 through 6 is entered, init enters the corresponding run level. Run levels 0, 5, and 6 are
reserved states for shutting the system down. Run levels 2, 3, and 4 are available as multi-user
operating states.
OPTIONS
0 Go into firmware.
5 Shut the machine down so that it is safe to remove the power. Have the machine remove power,
if possible.
6 Stop the operating system and reboot to the state defined by the initdefault entry in /etc/inittab.
Reference: man init, man shutdown

Explanation/Reference:
Explanation:
You can change an inactive boot environment into an active boot environment. Only one boot environment can be active at a time. The newly activated boot environment becomes the default environment upon reboot.
How to Activate an Existing Boot Environment
1. Use the following command to activate an existing, inactive boot environment:
beadm activate beName
beName is a variable for the name of the boot environment to be activated.
Note the following specifications.
beadm activate beName activates a boot environment by setting the bootable pool property, bootfs, to the value of the ROOT dataset of the boot environment that is being activated.
beadm activate sets the newly activated boot environment as the default in the menu.lst file.
2. Reboot.
The newly activated boot environment is now the default on the x86 GRUB menu or SPARC boot menu.