Solaris

BOOT PROCESS BREAKDOWN

1) The boot command reads and loads the bootblock into memory.      


2) The bootblock locates and loads the secondary boot program, ufsboot, into memory and passes control to it. 
   NOTE: A network boot uses a different secondary boot program: inetboot instead of ufsboot.      


3) ufsboot locates and loads the core kernel images and the required kernel runtime linker (krtld) into memory and 
   passes control to the loaded kernel.      


4) The core kernel locates and loads mandatory kernel modules from the root disk directory tree and executes 
   the main startup code.      


5) The kernel startup code executes, creating and initializing kernel structures, resources, and software components.      


6) The system executes shell scripts from system directories, bringing the system up to the init state specified in 
   the /etc/inittab file.      


Common Errors                       Normal Output                      Phase                           

-one of keyboard LED blinks         Resetting...                    ok boot 
-doesn't occur LEDs remain on        -console goes black            || (POST phase) 
                                     -keyboard LEDs blink           || 
-monitor stays blank                 -OBP banner appears            \/ 
 never see banner                   Initializing Memory             Execute primary 
                                     -see spinning baton            boot prgm - OBP 
Unable to find boot device          Rebooting with command          (Ref. "boot-device" 
Timeout waiting arp rarp            Boot device : File & Args       or "diag-device") 
                                                                    ||
                                                                    || 
                                                                    \/ 
File does not appear to be          FCode UFS Reader                Load the bootblk prgm 
executable                         (Enterprise Servers only)       (sectors 1 - 15 on boot disk) 
Not a valid ELF file                                                || 
(Executable and Linking Format)                                     || 
Can not find secondary boot                                         \/ 
program                           loading:/platform/../ufsboot     Load and start the secondary 
File does not appear to be        (Enterprise Servers only)        boot prgm (platform/`uname -m`/ 
Fast Data Access MMU miss                                          ufsboot) *tells prom load kernel modules 
                                                                    ||
                                                                    || 


                                                                   \/ ("boot -a") 
Unable to load kernel module..      SunOS Release 5.7...           Load and start the static kernel modules (kstat) 
Data Access Exception               Copyright.....                 /platform/`uname -m`/kernel/unix (genunix) 
                                                                    ||
                                                                    || 
                                                                    \/ 
moddir, rootdev, forceload...                                      Kernel reads the /etc/system file 
                                                                   For each entry in /etc/system a sysparam 
entry is created in /usr/include/sys/sysconf.h 
                                                                    || 
                                                                    \/ 
                                                                   Kernel initializes 
                                                                   (can start processes on its own) 
                                                                    || 
                                                                    \/ 
                                                                   Kernel starts the sched process (PID 0) 


                                                                  and then the init process (PID 1) 
                                                                    || 
                                                                    \/ 
                                                                   init process reads files /etc/default/init 
                                                                   and /etc/inittab 
                                  (single user)                     ||      


                                                                   \/ 
Errors (depending on which script  Configuring network             sysinit entries executed 
causes error):                     interfaces:                     -builds run level S using 
-network plumbing & config                                          /sbin/rcS 
-mount /usr (if separate)          Hostname:                        || 
-mount /proc and /dev/fd                                            || 
-configure /devices (reconfig)                                      || 
-configure /dev (reconfig)                                          || 
-mount /var (if separate)                                           || 
                                                                    \/ 
-mount all other file systems      (run level 2)                   Uses initdefault entry to determine 
-additional network config         The system is coming up.        run-level to boot to (default=3) 
 such as defaultrouter checks      Please wait.                     || 
 and dynamic routing tests                                          || 
-start NIS or NIS+(if applicable)                                   \/ 
-name service network config       /dev/rdsk/c0t0d0s3:is clean      Builds: 
-NFS client configuration          /dev/vx/rdsk/dskgrp/vol:clean    -run level 2 via /sbin/rc2 
                                                                    -/etc/rc2.d/S* 
-automount config(if applicable)                                    -run level 3 via /sbin/rc3 
-syslog configuration               syslog service starting.        -/etc/rc3.d/S* 
-save panic dump(if applicable)     volume management starting.     ||
-CDE login screen enabled                                           ||
-NFS server config(if applicable)   (run level 3)                   \/
                                                                    LOGIN
 
                                    The system is ready.