BOOTLDR

ptsomokos · ‎02-25-2008

Hi

Does anyone knows why i'm getting this output from a 836 Cisco?

rommon 1 > boot c836-k9o3y6-mz.123-14.T7.bin

an alternate boot helper program is not specified

(monitor variable "BOOTLDR" is not set)

and unable to determine first file in bootflash

loadprog: error - on file open

boot: cannot load "c836-k9o3y6-mz.123-14.T7.bin"

rommon 2 >

It refused to load from flash.

I make the whole tftpdnld procedure with 3 different ios

Check this out also

(i'm givving) rommon 2 > boot flash:c836-k9o3y6-mz.123-14.T7.bin

(and getting) Checksum failed on c836-k9o3y6-mz.123-14.T7.bin

Expected checksum: f411, calculated checksum: a28b

open: file "c836-k9o3y6-mz.123-14.T7.bin" not found

open(): Open Error = -1

loadprog: error - on file open

boot: cannot load "flash:c836-k9o3y6-mz.123-14.T7.bin"

Notes: The image its loaded propriate in the flash with the correct file size on it

htarra · ‎02-29-2008

type this in your Cisco 836 ADSL :

rommon >boot flash: c836-k9o3y6-mz.123-14.T7.bin

rommon >reload

Then you're going to be in a normal mode,

in this point, please type:

#config t

(config)#no boot system

(config)#boot system flash: c836-k9o3y6-mz.123-14.T7.bin

(config)exit

#copy run start

#sh ver

Here just check at the end if the configuration register is Ox2102

if not just type:

#config t

(config)#config-register 0x2102

(config)#exit

#copy run start

At the end restart the Cisco 836 ADSL :

#reload

paolo bevilacqua · ‎02-29-2008

He can't enter any of the IOS commands you're suggesting, precisely because the router fails to boot IOS.

ptsomokos · ‎03-02-2008

Thanks for your answer.

The problem was slightly different.

I tried 3 IOS and while the flash was 12MB probably was too mush for it.

Thats why the screens I posted

I tried the first one 7.5MB with xmodem and everything goes fine.

The initial problem was that someone probably delete the ios and the router fell on rommon mode

Goutam Sanyal · ‎02-29-2008

Hi,

With the addition with Paolo, I'd like to suggest you to tri with "boot slot0:". If till you are facing the same problem, try to upload the IOS via Xmodem.

Thanks

Goutam

Pls rate if it helps u!!!