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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.
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