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1841 Router flash reboot

ttuisawau
Level 1
Level 1

Good Day all,

I have an 1841 router that was working perfectly untill a reboot. After rebooting the router constantly boots into ROMMON. I changed the flash card for the router and it works ok. But using the original flash it boots to ROMMON. Below is the bootup message that appears:

System Bootstrap, Version 12.3(8r)T9, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2004 by cisco Systems, Inc.

PLD version 0x10

GIO ASIC version 0x127

c1841 processor with 131072 Kbytes of main memory

Main memory is configured to 64 bit mode with parity disabled

Readonly ROMMON initialized

program load complete, entry point: 0x8000f000, size: 0xc100

Initializing ATA monitor library.......

boot: cannot determine first executable file name on device "flash:"

System Bootstrap, Version 12.3(8r)T9, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2004 by cisco Systems, Inc.

PLD version 0x10

GIO ASIC version 0x127c1841 processor with 131072 Kbytes of main memory

Main memory is configured to 64 bit mode with parity disabled

Readonly ROMMON initializedprogram load complete, entry point: 0x8000f000, size: 0xc100

Initializing ATA monitor library.......

boot: cannot determine first executable file name on device "flash:"

System Bootstrap, Version 12.3(8r)T9, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2004 by cisco Systems, Inc.

PLD version 0x1

GIO ASIC version 0x127

c1841 processor with 131072 Kbytes of main memory

Main memory is configured to 64 bit mode with parity disabled

Readonly ROMMON initialized

rommon 1 >

I would like to know what causes this problem and how to fix it....if possible. I have had this router for only a month.

Thank You.

2 Replies 2

imnilesh
Level 1
Level 1

HI;

POssibly the Flash is couurpted. do contact cisco TAC and get it replaced or get TAC support for formatting and installing IOS on compact flash

since it a month old device only....

HTH

Nil

Hi Friend,

The router is not able to find a valid IOS in the flash and hence it is booting to ROMMON

This may be caused due to a corrupted flash file or the IOS is deleted accidently

check out the link for disaster recovery from rommonitor

http://www.cisco.com/en/US/products/ps5854/prod_configuration_guide09186a00802c35e9.html

HTH, rate if it does

Narayan

Review Cisco Networking products for a $25 gift card