Corrupted NVRAM during conversion from CatOS to IOS on 6500.

Answered Question
Jul 28th, 2009

I was following the procedures to convert CatOS to IOS on a 6500 with Sup-32. During one of the steps, after going into rommon 'priv' mode and doing a reset, it comes back with:

Warning: Rommon NVRAM is corrupted. Initialize the area to default values.

Cat6k-MSFC2A Platform

How does one initialize the are to default values? Is this a recoverable situation?

I have this problem too.
0 votes
Correct Answer by Edison Ortiz about 4 years 9 months ago


I've seen that error before and before opening a TAC case and requesting for a RMA, can you try putting the Supervisor in another slot?




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jbrenesj Tue, 07/28/2009 - 11:35

This is normally not good...

Try to re-purge the NVRAM from rommon if it lets you do it before it reloads again, if not, I was once able to put back the CatOS on it and re-did the conversion procedure. If not, RMA

rommon 2 > priv

!--- Press Enter or Return.

!--- You have entered ROMmon privileged mode.

!--- You see this output:

You now have access to the full set of monitor commands.

Warning: some commands will allow you to destroy your

configuration and/or system images and could render

the machine unbootable.

rommon 3 > fill

!--- Press Enter or Return.

!--- Be sure to enter these parameters exactly:

!--- The first line is a "be" (no space) followed by six zeros ("000000").

!--- The next line is an "8" (no space) followed by four zeros ("0000").

Enter in hex the start address [0x0]: be000000

!--- Press Enter or Return.

Enter in hex the test size or length in bytes [0x0]: 80000

!--- Press Enter or Return.

Enter in hex the pattern to be written [0x0]: ffff

!--- Press Enter or Return.

Enter the operation size 'l'ong, 'w'ord, or 'b'yte []: l

!--- Press Enter or Return.

!--- After the NVRAM erase has completed, issue the reset command.

rommon 4 > reset

!--- Press Enter or Return.

System Bootstrap, Version 12.2(17r)SX3, RELEASE SOFTWARE(fc1)

Technical Support:

Copyright(c) 2004 by cisco Systems, Inc.

!--- Output suppressed.

jkeeffe Tue, 07/28/2009 - 11:50

I'll try that once again - but that is how this all started. I went through the procedure:






.....and it was when the system started to reset that the error message popped up.

How did you get CatOS back on? Probably through a procedure as grueling as converting to IOS?

jbrenesj Tue, 07/28/2009 - 11:59

If you have the catos .bin file either on bootdisk: or disk0: you can try to load it from rommon.

rommon>dir (bootdisk: | disk0:)

rommon>boot (put the path here)

It sometimes work depending on the progress made on the conversion process.

Correct Answer
Edison Ortiz Tue, 07/28/2009 - 12:04


I've seen that error before and before opening a TAC case and requesting for a RMA, can you try putting the Supervisor in another slot?




jkeeffe Tue, 07/28/2009 - 12:36

Edison - you're the magic man today with that solution! I moved the sup to another slot and it booted to IOS perfectly. Then I moved it back and the same. All is well - thanks!

jkeeffe Tue, 07/28/2009 - 12:59

This was in a 6503-E and the sup-32 was in slot 1. Then I moved it to slot 2 at Edisons suggestion. Now it is back in slot 1.


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Posted July 28, 2009 at 11:08 AM
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