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Answer» Boot process dived into 4 PHASES.
- POST : Power on self test (POST), It will detect HARDWARE, machine host ID,serial No, architecture type, memory and Ethernet address and it will load the primary program called bootblk.
- OBPROM : Open boot programmable Diagnosing all the system hardware and memory. Initializing the boot parameter. Creating device trees and load the boot block from (0-15 sector), it is called as SECONDARY boot -- programmable ufsboot.
- KERNEL INITIALIZATION : ufsboot load the kernel (generic unix) kernel will load all the necessary devices modules to mount the root partition to continue the booting process .
- INIT PHASES : It will started by executing of /etc/init program and start other process reading the /etc/inittab FILES, as the directory in the /etc/inittab files.
Boot process dived into 4 phases.
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