STARTUP

1. POST
2. Sparc Boot PROM
3. OK prompt
4. bootblk
5. ufsboot
6. Kernel (kernel panic to PROM)
7. /etc/system
8. init
   1. /etc/inittab
      1. Field values - colon separated
         1. Two Letter ID
         2. list of run levels
         3. action to take
            • sysinit
            • initdefault
            • powerfail
            • wait
            • respawn
         4. process to run
      2. Defines Run Levels
         1. 0 - Shutdown to PROM
         2. s - Single user mode
         3. S - Single user mode
         4. 1 - Single user mode
         5. 2- Partial multi-user mode
         6. 3 - Multi-user mode
         7. 5 - Shutdown and power off
         8. 6 - Reboot
      3. /sbin/rc# directories
         1. /etc/rc0.d - Shutdown to PROM
         2. /etc/rcs.d - Single user mode
         3. /etc/rcS.d - Single user mode
         4. /etc/rc1.d - Single user mode
         5. /etc/rc2.d - Partial multi-user mode
         6. /etc/rc3.d - Multi-user mode
         7. /etc/rc5.d - Shutdown and power off
         8. /etc/rc6.d - Reboot
      4. /dev/

SHUTDOWN

1. shutdown -y -g secs -i run-level
2. init 5, init 0
3. halt
4. Stop-A (sync)