Third-party Compact Flash - 1841 Router

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May 4th, 2009
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I have a Cisco 1841 router. Can I use standard (ex. Purchased at Best Buy or Walmart) compact flash memory when upgrading. I know in the past this would not work, especially with the Catalyst 6500 series.

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Leo Laohoo Mon, 05/04/2009 - 16:42
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Hi Matt,

Not all 3rd party CF will work so you'll have to do some trial-and-error.

I bought a 1GB CF Type 2 card for an ISR router in my lab environment and it worked great. Just remember to format it to the model of router you have.


I actually have a media reader in which I copy all of the files over within windows (beats TFTP) and then load the card and boot.

Leo Laohoo Tue, 05/05/2009 - 13:40
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Before I forget, maximum CF or USB size is 2Gb.

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