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isr boot to rommon

mialbert
Level 1
Level 1

I have a c1941 isr that restarts into rommon mode upon every restart.  Verified that the config register is set for 0x2102.  When it boots to rommon.  I've set the configuration register as 2102 in rommon mode(confreg 0x2102)then loaded the active(and only)ios in flash with boot flash:  and it will load ios fine and restart to it.  Assuming that confreg 0x2102 entered while in rommon mode is enough to get it to start normally(as well as config-register 0x2102 in normal mode).  Then what other known issues exist that could be causing the isr to restart into rommon mode?(the flash for the c1941 is internal).  

1 Reply 1

Carlos Villagran
Cisco Employee
Cisco Employee

Hi!! 

Maybe the boot system is not pointing to the IOS. Please configure boot system flash [flash-fs:][partition-number:][filename]   (where filename is the name of the IOS file in your flash) in the global configuration mode and let's try to reboot the router, it should work.

This is the documentation for the boot process:

http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/command/reference/ffun_r/frf010.html#wp1017705

Hope it helps, best regards!

JC