Use this boot method to boot the system
after performing a system maintenance task such as backing up a file system.
At this level, only local file systems are mounted and users cannot log
in to the system.
Use this procedure to boot a
Solaris kernel other than the default kernel.
Alternately, you can obtain a copy
of an alternate boot file, change the default kernel to the new kernel,
then set the boot-file parameter to boot the new default boot device.