Recover/Upgrade a Router IOS Using USB Flash Drive
This procedure demonstrates using a USB Flash Drive to recover/upgrade an IOS
image using the USB port of a router.
Step 1: Get the correct IOS image onto the laptop's desktop. (Figure 1)
Step 3: Plug the USB Flash Drive into an available USB port on the router. For this example, the USB Flash Drive is plugged into slot 0.
Step 4: Use the dev command from ROMMON to see the available devices.
Step 5: Use the dir devicename command to ensure the router can read the device.
Step 6: Use the boot device:filename command to boot directly to the IOS image on the USB Flash Drive.
Step 7: Once the router completes the boot, copy the image from the USB Flash Drive to the Compact Flash of the router using the copy source destination command.
Step 8: Verify the copied image using the show flash command. Set boot statements if applicable.