Changing the Default Boot Environment
Changing an inactive BE to become active means that the BE will be used when the system is next rebooted. This BE then becomes the default environment.
$ beadm activate BeFMRI
Note - When a BE is created, regardless of whether it is active or inactive, an entry is created for the BE on the x86 GRUB menu or the SPARC boot menu. The default BE is the last BE that was activated.