Cisco RSP7000 Installation And Configuration Manual page 46

Reference Information
Step 5
When the system reloads, it will boot the file image.new from the Flash memory card in slot 0.
Recovering from Locked Blocks
A locked block of Flash memory occurs when power is lost or a Flash memory card is unplugged
during a write or erase operation. When a block of Flash memory is locked, it cannot be written to
or erased, and the operation will consistently fail at a particular block location. The only way to
recover from locked blocks is by reformatting the Flash memory card with the format command.
Caution
46 7000 Series Route Switch Processor (RSP7000) Installation and Configuration in the Cisco 7000 Series Routers
Use the following series of commands to designate the file image.new (which is in the Flash
memory card in slot 0) as the default boot image:
Router# config t
Router(config)# no boot system
Router(config)# boot system flash slot0:image.new
Router(config)# ^z
Router# copy running-config startup-config
Router# reload
Formatting a Flash memory card will cause existing data to be lost.