Cisco 7200 Compact Flash Disk for NPE-G1, 256 MB Option MEM-NPE-G1-FLD256= User Manual

Use the following procedure to enable booting the file myfile from a Flash memory card:

Enter configuration mode and specify an image filename in the PC card slot from which to boot by using 
the configure terminal command, as follows:

System# configure terminal

Enter configuration commands, one per line. End with CTRL-Z.

System(config)# boot system flash disk0:myfile

Specify disk2: for a CompactFlash Disk on the NPE-G1 or NPE-G2. 

Enable the boot system flash disk0:myfile command using the config-register command with the 
hexadecimal value shown in the following example:

System(config)# config-reg 0x2102

This command, with the hexadecimal value 0x2102, results in the following:

Enables the system to boot the default boot ROM software if the Flash Disk-based image fails to 
boot—hexadecimal value 0x2000

Disables Break—hexadecimal value 0x0100

Enables the image myfile as the default boot image—hexadecimal value 0x0002

Press Ctrl-Z to exit configuration mode:

System(config)#

System#

Save the new configuration to NVRAM by using the copy system:running-config 
nvram:startup-config

 command as follows:

System# copy system:running-config nvram:startup-config

After you copy a software image to the Flash Disk, use the following series of commands to make the 
image bootable (the file named new.image in this example). The software image in this example is 
located on the Flash Disk in PC card slot 0. Note that the config-register command is also a part of this 
command sequence because you must set the configuration register to 0x2102 to enable loading an image 
from the Flash Disk.

System# config terminal

System(config)# no boot system

System(config)# boot system flash disk0:new.image

System(config)# config-register 0x2102

System# copy system:running-config nvram:startup-config

System# reload

When the system reloads, it boots the image new.image from the Flash Disk in slot 0.