Summary
The SPARC boot process has four main phases: OBP, boot program, kernel initialization, and init. The OBP phase performs various diagnostics and runs a quick POST procedure, to verify the system's hardware and memory. In the boot program phase, the primary boot program, bootblk, finds the secondary boot program and loads it into memory. The next phase is the kernel initialization phase, where the kernel initializes itself and begins loading modules using the /platform/'uname –m'/ufsboot program to read the files. Init is the parent process for all other processes and is created by the kernel. It starts the other processes by reading the information stored in the /etc/inittab file.
A system can be shut down with any one of these commands: ...
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