Upgrading the System Image
How to Upgrade the System Image
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OL-5595-01
Step 3
no boot system
Use this command to delete all entries in the bootable image list, which specifies the order in which the
router attempts to load the system images at the next system reload or power cycle:
Router(config)# no boot system
Step 4
If the new system image is the first file or the only file displayed in the dir flash: command output, you
do not need to perform the following step.
boot system flash: system-image-filename
Use this command to load the new system image after the next system reload or power cycle. For
example:
Router(config)# boot system flash: c2600-i-mz.121-14.bin
Step 5
(Optional) Repeat to specify the order in which the router should attempt to load any backup system
images.
Step 6
exit
Use this command to exit global configuration mode:
Router(config)# exit
Router#
Step 7
show version
Use this command to display the configuration register setting:
Router# show version
Cisco Internetwork Operating System Software
.
.
.
Configuration register is 0x0
Router#
Step 8
If the last digit in the configuration register is 0 or 1, proceed to Step 9. However, if the last digit in the
configuration register is between 2 and F, proceed to Step 12.
Step 9
configure terminal
Use this command to enter global configuration mode:
Router# configure terminal
Router(config)#
Step 10
config-register 0x2102
Use this command to set the configuration register so that, after the next system reload or power cycle,
the router loads a system image from the boot system commands in the startup configuration file:
Router(config)# config-register 0x2102
Step 11
exit
Use this command to exit global configuration mode:
Router(config)# exit
Router#
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