Default Boot Sequence

1. ok boot
2. Execute primary boot - OBP
3. Load bootblk program
4. Load and start secondary boot (/platfrom/'uname -m'/ufsboot)
5. Load and start kernel (/platform/'uname -m'/kernel/unix)
   
   32-bit SPARC and X86
   /platform/platform_name/kernel/unix and /kernel/genunix
   
   64-bit SPARC
   /platform/platform_name/kernel/sparc9/unix and /kernel/genunix
   
   
6. kernel reads /etc/system
7. Kernel initialized
8. Kernel starts the init process
9. Read /etc/default/init and /etc/inittab
10. Execute rc scripts