how do i know which bootloader i am using.I have arduino pro mini board which have Atmega328P.now i want to know which bootloader is loaded in this chip.
Burn a new bootloader into the Pro Mini, then you know.
Did you buy a cheap clone from Ebay, the I would advice to burn a new bootloader anyway.
Why do you want to know this - if it works with avrdude etc - whu do you care- it just does don't matter!
Mark