If a Cisco IOS Software upgrade is performed using the tftpdnld command from ROM Monitor (ROMmon), and the router boots successfully but no image is in Flash, then the -r switch was used when the tftpdnld command was issued. The -r option causes the Cisco IOS image to be written to RAM but not to Flash.
This option is useful if a Flash issue exists or if time is critical. The process is shorter since the Flash write does not occur. However, because the Cisco IOS image is only in RAM, a power failure or reload will send the router back to ROMmon since no image is in Flash.
If the tftpdnld -r command was issued to load the Cisco IOS, perform these steps to copy an image to Flash:
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