I used to have this problem with new (3rd party) flash for 2600's where the flash was not formatted correctly from the manufacturer. Have you tried to using XMODEM to load your new image straight to DRAM and bypass the flash? Once you have the router running you can format the flash correctly and tftp your image to it.
Of course one alternative is to use a flash disk instead of the onboard flash. They are cheap and plentiful. InLine> bryan king | Senior Network Engineer InLine> Solutions Through Technology 600 Lakeshore Pkwy Birmingham AL, 35209 205-278-8139 [p] 205-941-1934[f] [EMAIL PROTECTED] www.InLine.com All Quotes from InLine are only valid for 30 days. This message and any attached files may contain confidential information and are intended solely for the message recipient. If you are not the message recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jonathan Charles Sent: Monday, February 25, 2008 12:18 AM To: Travis Dangel Cc: [email protected] Subject: Re: [c-nsp] 3640 Flash Upgrade 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 <[EMAIL PROTECTED]> 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 > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
