Cisco 2610 Hardware Installation Guide - Page 82

ROM Monitor Commands Appendix B Using the ROM Monitor As long as the configuration register value remains 0x0, you must manually boot the operating system from the console. Refer to the boot command in the "ROM Monitor Command Descriptions" section on page B-4. The two methods of entering the ROM monitor mode are as follows: Enter ROM Monitor Mode by Using the reload Command Connect to the router from a console, and follow these steps: Step 1 Step 2 Restart the router with the reload command. Router# reload Press the Break key during the first 60 seconds of the system booting. This forces the router into ROM monitor mode, and the ROM monitor prompt is displayed: rommon 1> Enter ROM Monitor Mode by Resetting the Configuration Register Connect to the router from a console, and follow these steps: Step 1 Step 2 Set the bits 3, 2, 1, and 0 of the configuration register to zero: Router# configuration-register 0x0 Restart the router with the reload command: The router boots into the ROM monitor mode, and the ROM monitor prompt is displayed: rommon 1> Note The number that appears in the ROM monitor prompt (1>, 2>, and so forth) is the line number. It increments each time you enter a ROM monitor command. ROM Monitor Commands Showing ROM Monitor Commands Enter ? or help at the ROM monitor prompt to see a list of available commands. For example: rommon 1> alias boot break confreg cont context cookie dev ? set and display aliases command boot up an external process set/show/clear the breakpoint configuration register utility continue executing a downloaded image display the context of a loaded image display contents of cookie PROM in hex list the device table Cisco 2600 Series Routers Hardware Installation Guide B-2 OL-2171-06