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New Member

Formatting Flash Memory

Hello All,

I hav Cisco 2621 Router, i just ordered flash memory(32MB FS).

I have installed the flash memory in to the router by removing older one, but as i boot the router router goes in to ROMMON as it dosent has any IOS, now i am trying to download the IOS from ROMMON using "tftpdnld" switch but it says the Flash is not formated.

so How can i format the new FLASH to load any IOS in to that.


Dhaval Tandel


Re: Formatting Flash Memory


you can use the format flash: command in the Rommon mode to foramt the flash.

check out the following links

HTH, rate if it does


New Member

Re: Formatting Flash Memory

Thanks for takin interest,

I dont have format command supported on present ROMMON.

rommon 15 > ?

alias set and display aliases command

boot boot up an external process

break set/show/clear the breakpoint

confreg configuration register utility

cont continue executing a downloaded image

context display the context of a loaded image

cookie display contents of cookie PROM in hex

dev list the device table

dir list files in file system

dis display instruction stream

dnld serial download a program module

frame print out a selected stack frame

help monitor builtin command help

history monitor command history

meminfo main memory information

repeat repeat a monitor command

reset system reset

set display the monitor variables

stack produce a stack trace

sync write monitor environment to NVRAM

sysret print out info from last system return

tftpdnld tftp image download

unalias unset an alias

unset unset a monitor variable

xmodem x/ymodem image download


Dhaval Tandel

Re: Formatting Flash Memory


Can you just try executing the command ?


New Member

Re: Formatting Flash Memory

It says command not found