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Community Member

2851 router in rommon


my router is in rommon mode how can i get back to normal operation its not taking the confreg 0x2102 also

i think the image is got corrupted

how can i upload new image.

ur suggestion will be highly appreciated



Re: 2851 router in rommon

Try the following command in ROMMON

rommon 1 > confreg 0x2102

rommon 2 > reset

If it still boot in ROMMON, try this link

If the first link doesn't fix the problem, try this link

Community Member

Re: 2851 router in rommon

when i do

dir flash

the router is showing an error

open error=-66

dir:cannot open device flash

Re: 2851 router in rommon

I think this error message displays when the flash is empty or the file system is corrupted. Try the second link I provided to you to upload IOS using XMODEM

Community Member

Re: 2851 router in rommon


thanks for ur speedy reply but still m getting the same error.

Re: 2851 router in rommon

Contact your vendor then, the flash maybe faulty. The error -66 looks like hardware, can't find it in Cisco web

Community Member

Re: 2851 router in rommon

i think this is the matter as i used one router flash this is working not giving this error.

i m trying with other router flash which is 32mb only mine was 64 but the ios will come in this as its only 28mb.

i will make this router running and when will get new flash will replace well thanks for your reply .

i will assaign points whn router is up and running.

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