topic Re: 2841 router Flash is not detected in Switching

2841 router Flash is not detected

Dhruba pal — Wed, 06 Mar 2019 15:04:47 GMT

Please help .

I have 2841 router but unfortunately when turn on router ,prompt goes to romon mode.After changing confreg 0x2102 & rebooting the router ,router does not come to normal.Show flash' does not contain any output on the flash.Please help me by a document.

Thanks in advance

Re: 2841 router Flash is not detected

Mark Yeates — Tue, 04 Aug 2009 14:38:08 GMT

Instead of using "sh flash" you should use "dir" in rommon. That should display the contents of your flash.

Please see the following link to help you in rommon:

http://www.cisco.com/en/US/docs/routers/access/1800/1841/software/configuration/guide/b_rommon.html

HTH,

Mark

Re: 2841 router Flash is not detected

Dhruba pal — Tue, 04 Aug 2009 14:54:14 GMT

Thanks you very much.

Let me try

Re: 2841 router Flash is not detected

Peter Paluch — Tue, 04 Aug 2009 16:39:15 GMT

Hello,

According to the output you have posted here, the router does not even recognize the Compact Flash (CF) card.

Have you already tried to remove and reinsert the CF card? Sometimes they get loose and just a couple of disconnected pins can cause this problem.

If this does not help, do you have any other 2841 router with a similar CF card? If yes, try swapping the CF cards to see if the other card works in your router.

It can also be that your CF card is faulty. It has happened to me before and in fact there was a series of faulty CF cards that required replacement. It was documented in Cisco Field Notice document here:

http://www.cisco.com/en/US/ts/fn/620/fn62127.html

While I doubt that you have one of those CF cards, it might be that it simply passed away. If that is the case, you can also replace it by a normal stock CF card (if possible not larger than 1GB).

Best regards,

Peter

Re: 2841 router Flash is not detected

Leo Laohoo — Tue, 04 Aug 2009 21:09:21 GMT

Do you have any other 2821 or 2841 router available? If so, you can use that unit's flash and boot this unit that's having a problem.

Is this CF came with the router?

What is the size of this CF?

How to Download a Software Image to a Cisco 2600 via TFTP Using the tftpdnld ROMMON Command

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bf9e.shtml