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Cisco 801 - Missing IOS

Help!! my 801 router is missing its ios. i have hyperterminaled into it and it has presented me with a boot# prompt (which it does everytime). when i check my nvram settings my .bin file is not there. i have my ios backed up on a pc. how do i go about transfering it from my pc to my router? any help would be greatly appreciated.

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New Member

Re: Cisco 801 - Missing IOS

You can follow the orientations of the URL http://www.cisco.com/en/US/products/hw/routers/ps380/products_tech_note09186a0080117772.shtml, the orientations to solve your problem are:

Either way, you end up with the "boot #" prompt. Set up the following parameters to make the download possible:

the name of the Cisco IOS Software image file on your TFTP server

the IP address of the TFTP server (for example: 10.0.0.1)

the IP address of the Ethernet interface of the Cisco 800 series router (for example: 10.0.0.2)

the subnet mask of the Ethernet interface of the Cisco 800 series router (example: 255.255.255.0)

To do this, use the following commands (respectively) :

boot# set file-name = filename

boot# set serv-ip = 10.0.0.1

boot# set unit-ip = 10.0.0.2

boot# set netmask = 255.255.255.0

If the TFTP server is on a different subnet than the router, set up an IP address for a gateway server:

boot# set gate-ip = 10.0.0.254

If you modified the configuration register to go in TinyROM mode, set it back to its initial value (usually 0x2102):

boot# set ios-conf = 0x2102

You can check if the parameters are correctly set with the set command (without any argument). If everything is correct, save the parameters:

boot# save

Verify that you still have connectivity with the server by pinging the Ethernet address of the router (the one defined with the set unit-ip command) from the TFTP server.

Erase the existing Cisco IOS software image.

Use the list command to see the different files currently stored in Flash:

boot# list

Status Size Dev Name

------ 48K flash TinyROM-1.2(1)

---r-x 3249K flash c800-nsy6-mw.bin

768K free 4096K total boot#

To delete the old Cisco IOS software image (or any other file you want to delete), enter:

boot# delete c800-nsy6-mw.bin

boot#

This tags the file as "deleted".

boot# list

Status Size Dev Name

------ 48K flash TinyROM-1.2(1)

--Dr-x 3249K flash c800-nsy6-mw.bin

To effectively erase the file, use the erase flash command:

boot# erase flash

Erasing deleted and invalid files from flash

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

erase: succeeded (7 seconds)

boot#

Download the new image by entering the following command:

boot# upload tftp

TFTP initiated.

File name: c800-nsy6-mw.bin

RAM size: 0x00650bc8 (6622152)

Raw size: 0x00541415 (5510228)

Image size: 0x002cbc28 (2931752)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

upload: succeeded (17 seconds)

Save the file from RAM to Flash:

boot# save file = c800-nsy6-mw.bin

Reload the router:

boot# boot

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