Guidelines for Booting a System

Keep the following in mind when booting a system:

• After a system is shut down, it is brought to a new run level using the boot command.

• A system can be rebooted by turning the power off and then back on. This is not a clean shutdown because system services and processes are terminated abrubtly. However, turning a system's power off and back is an alternative for emergency situations.

• SPARC and x86 systems use different hardware components for booting. These differences are described in Chapter 10, The Boot Process (Reference).