[c-nsp] 3640 Flash Upgrade

[Jonathan Charles]

This is just a stab int he dark, but could it be that you need new
PROMs to get the router to see em? I know this was an issue on
2600s...



Jonathan

On Sun, Feb 24, 2008 at 11:24 PM, Travis <td at travisdangel.com> wrote:
> I purchased 2 new flash SIMMs to upgrade a 3640 from 8MB to 32MB and I'm
>  having trouble getting them to work. I'm to the point now where I'm thinking
>  they are just for the wrong platform but I'm seeking advice before I attempt
>  to have them exchanged in case I'm missing something.
>
>
>
>  When the router boots with the new flash SIMMs in I get the following
>  errors:
>
>
>
>  unknown flash device - mandev code = 0xffff
>
>  cannot read flash info
>
>  getdevnum warning: device "flash" has size of zero
>
>  unknown flash device - mandev code = 0xffff
>
>  cannot read flash info
>
>  getdevnum warning: device "flash" has size of zero
>
>  open: read error...requested 0x4 bytes, got 0x0
>
>  trouble reading device magic number
>
>  boot: cannot open "flash:"
>
>
>
>  and then it dumps me to rommon. When I try to copy an image over via Xmodem
>  it responds with insufficient space for the ios image after it tries to
>  erase the flash and won't even let me start the transfer.
>
>
>
>  The odd thing is I can put in ONE 16MB SIMM in the second flash socket and
>  leave the original 8MB SIMM in the first socket and the router boots just
>  fine and shows 24MB of flash memory. If I replace that 8MB and use BOTH 16MB
>  SIMMs then it dumps the above error. Same result if I try just one of 16MB
>  in the first socket alone - dumps errors and shows 0 bytes on the flash.
>
>
>
>  I read some very dated solution to a similar problem where a somebody had
>  done some partitioning to make it work but I can't seem to get that to work
>  either. however, I've never played with flash partitioning in IOS either so
>  I could be doing something wrong. I booted with the 8MB in the first slot
>  and the new 16MB in the second slot. I then created 2 new partitions, one
>  that was 8MB and one that was 16MB and then copied the boot files to the
>  16MB partition so the 8 and 16 were equal, however, it did not work. I got
>  the same errors upon boot when I tried the 16MB all by itself again.
>
>
>
>  Any help or advice would be appreciated. Thanks in advance!
>
>
>
>
>
>  Travis
>
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