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Cisco 12000 Series Internet Router Configuration Guide for Cisco IOS Release 12.0S
Chapter 2 Basic Configuration of the Cisco 12000 Series Internet Router
Upgrading and Backing Up Cisco IOS Software Images and Configuration Files
Note If there is not enough room on the Flash memory card or Flash disk to perform the copy, an error message
is displayed to the console. In this case, you will need to delete files to make room for the new software
image, as described in the “Upgrading a Cisco IOS Software Image on Flash Memory from a TFTP
Server” section on page 2-14.
To designate the copied image file to be the new default system image for boot purposes, see the
“Specifying a Cisco IOS Software Image File as the Default Boot Image” section on page 2-16.
Specifying a Cisco IOS Software Image File as the Default Boot Image
After you copy a Cisco IOS software image file to a Flash memory card or Flash disk, you will want to
designate this new file as the new default system image for boot purposes. To do this, follow these steps:
Command Purpose
Step 1
Router# copy slot1: slot0:
Begins the copy dialog to copy a file on Flash memory card
located in slot 1 to the Flash memory card located in slot 0. Use
disk0: to copy to or from a Flash disk in slot 0, and disk1: to copy
to or from a Flash disk in slot 1.
Step 2
Source filename []? gsr-p-mz.120-7.4.5
Specifies the name of the file containing the Cisco ISO software
image on slot 1. In this example, the file is named
gsr-p-mz.120-7.4.5.
Step 3
Destination filename [gsr-p-mz.120-7.4.5]?
<Return>
Specifies the name of the file to be created on the Flash memory
card in slot 0. Press Return to use the same name as the source
file. After you enter the name of the destination file, the router
begins to copy the file. This procedure can take a very long time.
When the privileged EXEC prompt is displayed (Router#), the
copy is complete.
Command Purpose
Step 1
Router# configure terminal
Enter configuration commands, one per line. End
with CNTL/Z.
Enters global configuration mode.
Step 2
Router(config)# boot system flash
slot0:gsr-p-mz.ME12_SRP_VER_12_08_12
Specifies that at startup, the router loads the software
image named gsr-p-mz.ME12_SRP_VER_12_08_12,
located on the linear Flash memory card in slot 0.
Step 3
Router(config)# config-register 0x0102
Disables the Break function and enables the boot system
flash command.
Step 4
Router(config)# Ctrl-Z
Exits global configuration mode.
Step 5
Router# copy running-config startup-config
or
Router# write memory
Saves the software configuration register settings to
NVRAM.
Step 6
Router# reload
Reboots the router and uses the specified image on the
Flash memory card inserted in PCMCIA slot 0 to boot
the system.
