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Cisco 831 router deleted flash

Hi there,

I have recenlty purchased an 831 and was in the process of setting it up. I was attempting to switch between CRWS and SDM as described at:

http://www.cisco.com/en/US/products/sw/secursw/ps5318/prod_installation_guide09186a008017dcc8.html

and it looks like I deleted files on the router.

I cannot access the router from a browser anymore so I am accessing it thru hyper terminal - serial connection. It boots straight to rommon. If it is booting straigt to rommon, does this mean the IOS is gone? The following is displayed at boot:

System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Copyright (c) 2002 by cisco Systems, Inc.

C800/SOHO series (Board ID: 29-129) platform with 49152 Kbytes of main memory

boot: cannot determine first file name on device "flash:"ú

System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Copyright (c) 2002 by cisco Systems, Inc.

C800/SOHO series (Board ID: 29-129) platform with 49152 Kbytes of main memory

boot: cannot determine first file name on device "flash:"

System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)

TAC Support: http://www.cisco.com/tac

Copyright (c) 2002 by cisco Systems, Inc.

C800/SOHO series (Board ID: 29-129) platform with 49152 Kbytes of main memory

In rommon I have found that there are no files in flash (dir flash:) As described in some support documents I have download the sdm.zip file from cisco and tried to copy over new sdm files using TFTP. I successly copied sdm.shtml over, but when I try to copy any other files from sdm download I get an error shown below:

IP_ADDRESS:10.10.10.1

IP_SUBNET_MASK:255.255.255.0

DEFAULT_GATEWAY:10.10.10.1

TFTP_SERVER:10.10.10.2

TFTP_FILE:sdmconfig83x.cfg

Receiving sdmconfig-83x.cfg from 10.10.10.2

File reception completed.

TFTP flash copy: Invalid file header, copy terminated.

Reason: Wrong target platform OR corrupt file.

If/when I copy these files over successly, is this all that is needed to do to get the router to boot properly?

Any help would be greatly appreciated.

Jeff

1 REPLY
Bronze

Re: Cisco 831 router deleted flash

Since you have lost the flash , first you have to load the flash the you have to install the Sdm file flash file looks like "c831-k9o3y6-mz.122-8.YN.bin" this , this can be downloaded from cisco site.

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