I have 2 sup mods running on my core with 32 meg flash memory cards installed on each. I need to upgrade the IOS which will require me to upgrade my flash cards. Can I remove the flash memory cards from the sup mods while the core is still running, since everything currently is running in memory? My idea is to remove the cards, insert the new, format and tftp the new IOS to the cards all without interrupting service. Is this possible or will the core require me to reboot durring this process.