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Upgrade IOS on Cisco ASAs and replace config leaves me in rommon mode

Posted on 2012-09-05
Medium Priority
Last Modified: 2012-09-10
I have some Cisco 5505 ASAs that have an 8.2x IOS on them that I'm working on upgrading to 8.4x.  My thought was to upload the new IOS file, and then copy a new config file with the 8.4x syntax that I know works to the startup-config.  The issue is I always get left in rommon mode after I reboot.  I think some of it has to do with the boot variable that gets left at the old IOS image because when in rommon I can tell it to boot the 8.4 IOS, but it still goes to rommon after each reboot.

Am I missing something?
Question by:jpletcher1
  • 5
LVL 17

Expert Comment

ID: 38368653
you might have a wrong setting on config-register, make sure that :
 "config-register 0x1'

hope this helps

Author Comment

ID: 38368687
Yes, it is set to 0x1.  Still doesn't boot off IOS on flash, boots into rommon, then I can boot the IOS from rommon.

Author Comment

ID: 38368724
Once in rommon, if I manually boot the IOS, then enter the config and set the system boot parameter, then save that to startup, it seems to work from then on.  But then if I do a write erase on it again and reboot, it boots to rommon instead of the IOS that is on the flash.
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Author Comment

ID: 38368807
I also think it might be trying to do an upgrade on the config to bring it from pre 8.3 to post 8.3.  Maybe that's where it is hanging up as well.

Accepted Solution

jpletcher1 earned 0 total points
ID: 38369251
Well, it was a silly mistake on my part... I was hitting "Escape" to boot up faster when I should have been hitting the space bar.  Hitting the Escape key was taking me into rommon...  

Maybe this will be helpful to someone else who is half asleep and making dumb mistakes...

Author Closing Comment

ID: 38382353
Solution was something I was doing incorrectly on my part.  There was never actually a real issue.  Thanks for the replies none-the-less.

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