The xm tool provides a variety of commands for managing
domains. Use the create command to start new domains. Assuming
you've created a configuration file myvmconf based around
/etc/xen/xmexample2, to start a domain with virtual machine
ID 1 you should type:
# xm create -c myvmconf vmid=1
The -c switch causes xm to turn into the domain's
console after creation. The vmid=1 sets the vmid
variable used in the myvmconf file.
You should see the console boot messages from the new domain appearing
in the terminal in which you typed the command, culminating in a login
prompt.