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New Member

IOS related


I have Cisco3640 router when I boot the router is displays the following error.

"Not able to decompress the image"

What could be the possible cause.I belive It could be either teh IOS corrupted or memory problem.

Please can any one guide me to resolve the problem.

Thanks and Regards,



Re: IOS related


This error will appear if;

- the IOS image is corrupted

- the IOS image is not in the path specified

- no IOS image in the FLASH to load

Download a copy of IOS image an load it using XMODEM

Take note of the minimum DRAM and FLASH recommended for the IOS image selected.

New Member

Re: IOS related

Hi Medan,

Thanks for the info.

Finally we could locate that is due to bad DRAM.

isco 3640 has a 4 banks of memory.

first 2 bank had a 32 MB DRAM,out of that one memory module is faulty.

What we did is we popoulate the bank 0 and bank 1 with the 16 MB module,so total 32 mb,then bank 2 and bank 3 with the existing 32 mb memory module(in these two 32 mb memory module which is faulty is not able to locate)

The Cisco 3640 will support the maximum of 128 MB.

it should be in the following manner

64 mb 2 module for 128 MB

32 MB 2 module for 64 MB

we can not have the combination 32 and 64,etc.

Thanks and Regards,