Cisco Systems Cisco 12008 manual Specifying a Cisco IOS Image for Booting the System

Performing Other Configuration Tasks

The new Flash memory card is now ready for use.

Specifying a Cisco IOS Image for Booting the System

Use the procedure in this section to identify a particular Cisco IOS software image (named new.image) that is to be made bootable from a Flash memory card.

The software configuration register must be set to “0x2102” during this procedure in order for the image to boot from a Flash memory card; accordingly, the config-registercommand must be included in the command sequence, as shown below:

Router# config terminal

Router(config)# no boot system

Router(config)# boot system flash slot0:new.image

Router(config)# config-register 0x2102

Ctrl-z

Router# copy running-config startup-config

Router# reload

When you issue the reload command, the specified file (new.image) on the Flash memory card inserted in PCMCIA slot 0 is used to boot the system.

If one of the following software configuration register settings were to be specified in the preceding example, the system would behave as described below:

•0x2000—The system would boot a default Cisco IOS software image from a Flash memory card (if the network boot fails).

•0x0100—The system would ignore the Break function.

•0x0101—The system would boot the default image (the first image found) from the onboard Flash memory SIMM on the RP. This setting also tells the system that it should not reset the Break disable function, nor should it check for a default filename for booting over the network.

•0x0002—The system would look in the Flash memory SIMM on the RP for a default Cisco IOS software image.

•0x0102—The system would check for a default netboot filename, boot from a Flash memory card (if the netboot operation fails), and disable the Break function.

4-50Cisco 12008 Gigabit Switch Router Installation and Configuration Guide