1. Yaboot allows an administrator to perform interactive debugging of the startup process by
executing the /etc/sysconfig/init script.
2. Mounts the /proc special file system.
3. Mounts the /dev/pts special file system.
4. Executes /etc/rc.d/rc.local, which was set by an administrator to perform site-specific
setup functions. Performs run-level specific initialization by executing startup scripts defined in
/etc/inittab. The scripts are named /etc/rc.d/rcX.d, where X is the default run
level. The default run level for a SLES system in the evaluated configuration is 3. The following
lists some of the initializations performed at run level 3.
•Saves and restores the system entropy tool for higher quality random number generation.
•Configures network interfaces.
•Starts the system logging daemons.
•Starts the sshd daemon.
•Starts the cron daemon.
•Probes hardware for setup and configuration.
•Starts the agetty program.
For more details about services started at run level 3, see the scripts in /etc/rc.d/rc3.d on
an SLES system.
Figure 5-80 schematically describes the boot process of System p servers.
162