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Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
AppendixC Using the CompactFla sh D isk Working with a CompactFlash Disk
•Enables the system to boot the default boot ROM software if the CompactFlash Disk-based image
fails to boot—hexadecimal value 0x2000
•Disables Break—hexadecimal value0 x01 00
•Enables the image myfile as the default boot image—hexadecimal value 0x0002
Step3 Press Ctrl-Z to exit configuration mode:
System(config)#
Crtl-Z
System#
Step4 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
Making a CompactFlash Disk-Based Software Image the Bootable Software Image
This section explains how to make a CompactFlash Disk-based Cisco IOS software image a bootable
image.
After you copy a software image to the CompactFlash Disk, use the following series of commands to
make the image bootable (the file named new.image in this e xample). The s oftware image i n this example
is located on the CompactFlash Disk in slot 0. Note that the config-register command is also a part of
this command sequence because you must set the configuration register to 0 x2102 to enable loading an
image from the CompactFlash Disk.
System# config terminal
System(config)# no boot system
System(config)# boot system flash disk0:new.image
System(config)# config-register 0x2102
Ctrl-Z
System# copy system:running-config nvram:startup-config
System# reload
When the system reloads, it boots the image new.image from the CompactFlash Disk in slot 0.