11-06-2018 01:15 PM
We took a power surge. I tried to get our C3945 back online. It kept rebooting over and over again. It did not seem to be able to read the IOS file.
I formatted the memory and copied the IOS from the external thumb drive to the flash memory (yes, the thumb drive was formatted in FAT32 before we copied the IOS onto it). Nevertheless, the C3945 keeps rebooting.
Here is what I am getting each time it reboots:
System Bootstrap, Version 15.1(1r)T5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2012 by cisco Systems, Inc.
Total memory size = 2048 MB - DIMM0 = 1024 MB, DIMM1 = 1024 MB
CISCO3945-CHASSIS with C3900-SPE250/K9 with 2097152 Kbytes of main memory
Main memory is configured to 72/72(dimm 0/1) bit mode with ECC enabled
Readonly ROMMON initialized
Final autoboot attempt from default boot devices...
File system not supported.
boot: cannot determine first file name on device "flash0:"
autoboot: boot failed(boot flash0:), restarting...
It keeps doing that over and over again.
I am able to boot the router off of our external thumb drive. However (once I get to the IOS prompt and enter 'service-module g0/24 sesssion'), I get the following:
Router#service-module g4/0 session
Trying 192.168.239.1, 2258 ...
% Connection refused by remote host
Router#
So I am not able to get back into the service-module to configure the [24] ports.
I've spoken to several people who have Cisco experience. None of them have ever seen this before.
Any ideas?
Fred
11-06-2018 01:27 PM
boot: cannot determine first file name on device "flash0:"
may be reset to factory and try to upload IOS from Xmodem.
11-06-2018 03:07 PM
02-18-2019 11:33 AM
04-23-2019 03:31 AM
Just as a side note, when it comes to the 2900/3900 Series IOS upgrade/booting always ensure that you are booting the correct image for device exp. c3900e-universalk9 for CISCO3925E-SEC/K9 and c3900-universalk9 for CISCO3925 - non-E
03-04-2024 03:03 PM
Hpw do I get out out of rommon mode??
I am stuck here:
Readonly ROMMON initialized
Final autoboot attempt from default boot devices...
boot: cannot determine first file name on device "flash0:"
autoboot: boot failed(boot flash0:), restarting...
System Bootstrap, Version 15.1(1r)T5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2012 by cisco Systems, Inc.
Total memory size = 2048 MB - DIMM0 = 1024 MB, DIMM1 = 1024 MB
CISCO3945-CHASSIS with C3900-SPE250/K9 with 2097152 Kbytes of main memory
Main memory is configured to 72/72(dimm 0/1) bit mode with ECC enabled
Readonly ROMMON initialized
rommon 1 > sh onv
monitor: command "sh" not found
rommon 2 > sh flash;
I need to get out of this mode and I have the iOS need to put it in a Compact Flash not sure how to do that either..
ANy help will highly be appreciated
03-04-2024 04:15 PM
In ROMMON, post the complete output to the following command:
dir flash0:
dir flash1:
set
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