Boot Process Overview
After a system is turned on, the OpenBoot™ PROM (OBP) begins by executing a power-on self-test (POST). The POST probes and tests all components that it finds. If a component fails a POST, the OBP excludes that component from the system configuration. After POST completes, if the autoboot OBP environment variable is set to true, the OBP begins the boot process, loading the appropriate file from the boot device. The file that loads, and the boot device that loads it are controlled by OBP environment variables. You can set these variables using the OBP setenv command or the Solaris OE eeprom command. Refer to the boot (1M) and eeprom (1M) man pages for the names and default values of these variables.
When booting from a network ...
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