ROMMON mode

[Mohd Khairul Nizam]

Today it happen early in the morning. Not able to access to the router. From the console port this what it says.

What should i do??

================================================================================

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

device does not contain a valid FS

boot: cannot open "flash:"

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 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 >

[Leo Laohoo]

device does not contain a valid FS
boot: cannot open "flash:"
boot: cannot determine first executable file name on device "flash:"

1.  Your CF is not properly inserter or MISSING;

2.  Your IOS is corrupt;

3.  Your IOS is missing from the CF or someone's taken the liberty to rename the IOS to a different filename the router couldn't read/understand.

4.  The pins to the CF slot or the entire CF slot as a whole, is faulty.

[Mohd Khairul Nizam]

thanks for the answer,

I have 1 question though..

What if i change the register to 0x0, and perform the xmodem command to recover the ios. Would it be success??

[Leo Laohoo]

What if i change the register to 0x0,

Won't work.  The correct config-registry is 0x2102.

xmodem command to recover the ios.

I wouldn't recommend that either.  You have an 1800 with a CF.  Get a multi-card reader instead.  It's alot faster.

Can you console into the router and reboot the router?  I want to see the entire bootup process so I can see why your router is going into ROMmon.

[Mohd Khairul Nizam]

HI,

You want the multi-card reader to double confirm if the CF is working or faulty is it?

Yes, i can console and the config below is the entire bootup sequence

======

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

device does not contain a valid FS

boot: cannot open "flash:"

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 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 >

======

[Leo Laohoo · Accepted solution]

I think you CF is faulty.

[Mohd Khairul Nizam]

Hi leo,

I confirm that the CF is faulty. I connect to external and unable to read.

Then I get other CF and plug into the router and seem like it able to read the CF, only the error message is different, please see below,

===

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:"

===

What are the nescassary file needed to be loaded into the new CF, others that the IOS??

[Leo Laohoo]

What are the nescassary file needed to be loaded into the new CF, others that the IOS??

I will presume that the CF you're using is "compatible" to Cisco appliance.

You need to format the CF (FAT16) before loading any IOS files into it.

The CF should not exceed 4 Gb.  I have used 2 Gb CF but I've never had the chance to try out 4 Gb, however, there are some who claims to work.

[Mohd Khairul Nizam]

i think the new CF should be compatible because when i load inside the 1841 the bootup process showed "

boot: cannot determine first executable file name on device "flash:". Seem like it can read the new CF only that i don't have IOS right now.

[Leo Laohoo]

Ok.  Then format the CF with FAT16 and copy the IOS into it.