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Beginner

cisco 3945 password recovery

I observed two cisco 3945 routers lose IOS during password recovery. Router was rebooted, break sequence ctrl-break, then boot(instead of reset) issued. The router booted to its existing configuration or password recovery failed and router was power cycled again then ctrl-break issued. However this time the IOS was gone and all flash file systems were blank! It happened on two routers. Anyone know why such an anomaly would occur or has anyone witnessed such?

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Hall of Fame Community Legend

What about your config-registry? 

 

By the way, using the "Ctrl+Break" for password recovery on an ISR G1/G2 is "old school".  If you know WHY you need to do Ctrl+Break then the EASIEST solution is to eject the CF.  

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config register was set to confreg 0X2142 first time password recovery was attempted. It took but only after the power cycle(not when I simply typed boot) but by then the IOS images were gone. I found that very disturbing when it happened on two different routers and I never saw such a thing happen to a router before.