11-23-2011 07:07 AM - edited 03-04-2019 02:23 PM
Hi guys,
This question is about a Cisco 871, which has no bootable image in flash.
The device is currently in rommon, and i am attempting to copy the correct .bin file over from usbflash0: but recieve the following error:
unable to stat usbflash0:/: permission denied
i get the same error if i try to boot from usb, or even try to view the directory.
Config register is currently set to 0x2102
Typically in this scenario, i just boot from usb, and copy everything over in enable mode, but the lack of permission on this particular router has me stumped.
Ideas anyone?
11-23-2011 07:22 AM
here is the output from my attempts.
System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.
C870 series (Board ID: 3-148) platform with 131072 Kbytes of main memory
No bootable image file: flash:/
Unable to open boot file
System Bootstrap, Version 12.3(8r)YI4, RELEASE SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2006 by cisco Systems, Inc.
C870 series (Board ID: 3-148) platform with 131072 Kbytes of main memory
rommon 1 > dir flash:
Directory of flash:/
35864576 bytes available (4096 bytes used)
rommon 2 > dir nvram:
unable to stat nvram:/: permission denied
rommon 3 > dir usbflash0:
unable to stat usbflash0:/: permission denied
rommon 4 > boot usbflash0:T3.bin
Invalid device ID: usbflash0:
rommon 5 >
rommon 6 > copy usbflash0:T3.bin flash:
usbflash0:T3.bin: permission denied
rommon 7 > confreg
Configuration Summary
(Virtual Configuration Register: 0x2101)
enabled are:
load rom after netboot fails
console baud: 9600
boot: the boot helper image
do you wish to change the configuration? y/n [n]: n
rommon 8 >
... for those with keen eyes, yes i changed the configuration register since my first post
11-23-2011 10:38 AM
Hi Clyde,
You can try typing dev in rommon mode to see if the router recognizes your usb device.
11-23-2011 11:57 AM
unfortunately dev is not a valid command in this version of rommon.
on a side note, rommon version is 12.3, and some digging around, shows that maybe USB wasn't supported until 12.4
Is that the problem?
11-23-2011 10:23 PM
I believe you are correct and that the 871 ROMMON doesn't support USB booting or access. I've attempted the same thing previously and I came to the same conclusion.
I don't think that USB drivers were included in ROMMON until later versions than are available for the 871, the latest for which is 12.3(8r)YI6.
11-25-2011 07:52 PM
870 is the only router in the ISR G1 family that you can't boot from USB even when running the YI6 bootstrap.
The fastest way to load the IOS into the router via ROMmon is using TFTPDNLD.
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