This issue causes the Supervisor Engine to go to ROM Monitor (ROMmon) mode.
To resolve this issue, perform these steps:
If the prompt is displayed as ROMmon, the Supervisor Engine is not able to boot using the Catalyst OS (CatOS) image due to one or more of these reasons:
Ensure that a valid image is in the bootflash:, or slot0:, by issuing the dir device command from the ROMmon prompt, as shown:
Rommon 1> dir bootflash:!--- Issue this command if the image is in bootflash.Rommon 1> dir slot0:!--- Issue this command if the image is on a PCMCIA card.
If the image listed is correct, try to boot from that image, as shown:
Rommon 1> boot bootflash:filename
If the Supervisor Engine boots up properly using the CatOS image, perform these steps:
Console> (enable) show boot
If it is not set correctly, set the variables by issuing these commands:
Console> (enable) set boot system flash bootflash:filename Console> (enable) set boot config-register 0x10F
For information on software recovery on CatOS-based switches, refer to Recovering Catalyst Switches Running CatOS from Booting Failures.
For information on software recovery on Cisco IOS Software-based switches, refer to these documents: