PLEASE HELP!

[Ian Sully]

I am going to use a Cisco 2811 Router as a TFTP Server for ring tones and backgrounds for my phones, I switched the CF Card from 64MB, to 512MB, and now I am unable to install the IOS Image onto the flash, I have tried everything, from different TFTP Software, to using my laptop as a TFTP Server, I do not know what else to do. Well someone help me please?

[Leo Laohoo]

Does the router recognize the new 512mb CF?

[Ian Sully]

I think it does, but it gives me this Error "Open Error = -66"

[Martin L]

Those brand new Flash cards must be formatted before using. I bet this is why is not recognized by router.

let me check what is  file format

Regards, ML
**Please Rate All Helpful Responses **

[Martin L]

my PC reads the original Cisco 2901 card as FAT file format. I use All-in-1 card reader which can read and connect CF to PC via usb. it is easier to copy/paste IOS images onto CF Card from laptop, then insert it to Cisco router

[Ian Sully]

I tried formatting it, nothing.

[Roger Kallberg]

The maximum size for flash supported on this router is 256. Please see this post for more details, https://community.cisco.com/t5/ip-telephony-and-phones/512mb-compact-flash-in-2811-2851/td-p/1218921

[Leo Laohoo]

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@Roger Kallberg wrote:

The maximum size for flash supported on this router is 256.

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No, it is not.  

All my routers have non-Cisco 2 Gb in them.  Works as good as the original Cisco 1 Gb varieties with no failures.

Routers can support CF sizes up to 16 Gb. 

[Roger Kallberg]

It's possible that it might work, but the specifications state that the maximum for this model is 256Mb.

[Leo Laohoo]

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@Ian Sully wrote:

but it gives me this Error "Open Error = -66"

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This means the CF is not supported. 

Find another brand.  Maximum size is 16 Gb.  

I have good success with Verbatim 2 Gb CF (below).