Answer Posted / shahin

Hi Jitendera,

When the router boots, it looks for the boot command stored
in NVRAM which is By default "boot system flash" means boot
from flash

then the router loads the IOS from flash.

If it is unable to load IOS from Flash, then it goes for
TFTP server then ROM etc


So during boot, Router goes to -

NVRAM > Flash > TFTP > ROM.



I think i made it clear.

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