IOS Trouble

[1CCNA]

I am having problems starting a router I get this error message:

---------------------------------------------------------------

System Bootstrap, Version 12.2(6r), RELEASE SOFTWARE (fc1)
TAC Support:

http://www.cisco.com/tac

Copyright (c) 2001 by cisco Systems, Inc.
C2600 platform with 65536 Kbytes of main memory

program load complete, entry point: 0x80008000, size: 0xf8c3e0
Self decompressing the image : #################################################
################################################################################
########################################
Error : Uncompression of the image failed.
invalid compressed data--format violated

Error : zip decompress failed

*** System received a Software forced crash ***
signal= 0x17, code= 0x7, context= 0x8000c08c
PC = 0x0, Vector = 0x0, SP = 0x0

------------------------------------------------------------------

This error happens only when the IOS is greater than 7MB, When i put a smaller IOS the router starts just fine.

The Specs on the router are 2620 w/16MB Flash and 64MB RAM
IOS i'm trying to load:

c2600-ik9o3s3-mz.123-15b.bin (15MB)

The same IOS works on a different router with same specs, and i also try swaping the flash but still the same results.
Please Help!

 

[ciscofreak1241]

Looks like you have either a corrupted image or faulty memory. I seen this issue fixed when you either reset memory SIMMs in the router, but that doesn't solve everything or change the flash memory (or DRAM sometimes I seen for some reason). I don't think the BootROM anything to do with it espeically with the self-decompressing phase.

Here is the breakdown for your crash and some things to look at (I hope you have a registered CCO from some of these links below):

ERROR: A 'Software-forced Crash' error occurs when the router detects a severe,
unrecoverable error, and reloads itself to prevent transmission of corrupt data.
This error may be caused by watchdog timeouts, low memory, corrupt software image,
or hardware problems.
TRY THIS:
1. Please refer to TAC Case Collection - Software-forced crash for troubleshooting.
2. If the "Error : pre and post compression image sizes disagree" console
message is displayed along with 'Software forced crash' message, please refer
to TAC Case Collection - Software-forced crash (pre and post compression) for
troubleshooting.
3. If the "Not enough memory in the system to run this image" console
message is displayed along with the 'Software-forced Crash' message


URLs to look at:

http://129.41.16.73/core/showcase?case=K48918452

http://129.41.16.73/core/showcase?case=K12684910

http://129.41.16.73/core/showcase?case=K18781273

Question, have you tried to boot the image from the network via TFTP instead of the FLASH? That could tell us something. let me know if you have questions?

cf

 

[vipergg]

Some routers have the "verify" command which you can check the file , I think it would be verify flash:<imagename>

 

[1CCNA]

ciscofreak6778 i have tryed booting from a tftp server in ROMMON using the tftpdnld -r command but still the same results.

 

[JOAMON]

Get the router started with the smaller image.
Then erase the flash with the following command:
erase /no-squeeze-reserve-space flash:

Tftp the new file into the router but when asked to erase the flash make sure to answer N to that prompt.

For more info on this see the following link. Have had the same issue and this did the trick.

http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/products_field_notice09186a008040c94d.shtml

Hope this helps......