Power on self test is a test done by processor for processor.
After poser on self test it will move to ROM in which bootstrap program will reside which consists of booting process.
This bootstrap program will have the configure registration value.
post (Power on self test by a processor for a processor)
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ROM ( checks for boot strap program )
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Flash (if ios is there in flash it will load if no it will check for ftp server and loads in to ram, if ios is not there it will go to rommon mode)
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NVRAM (if ios is loaded then it will go Check startup config if it is unavailable in NVRAM it will check for TFTP server
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RAM If you are loaded in all then you can edit and read the files in RAM mode
Regards
Thanveer
"Everybody is genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is a stupid."
