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Install Field Replaceable Units (FRUs)
Make a Flash Memory Card
Image Bootable
Note In this example, the filename is new.image,
and the Flash memory card is located in slot 0.
Step 1 Enter the configure terminal command at
the enable prompt, as follows:
Router# configure terminal
Step 2 Enter the no boot system command, as
follows.
Router(config)# no boot system
Step 3 Enter the boot system flash
slot0:new.image command, as follows:
Router(config)# boot system flash
slot0:new.image
Step 4 Enter the config-register 0x2102
command to enable loading an image
from Flash memory:
Router(config)# config-register 0x2102
Step 5 Press Ctrl-Z to exit configuration mode.
Step 6 Enter the copy running-config
startup-config command to save the
configuration to NVRAM as follows:
Hostname# copy running-config startup-config
Step 7 Enter the reload command. When the
system reloads, it will boot the image
new.image from the Flash memory card in
slot 0.
Router# reload
Enable Booting from Flash
Memory
To enable booting from Flash memory, set
configuration register bits 3, 2, 1, and 0 to a value
between 2 and 15 in conjunction with the boot
system flash device:filename configuration
command, where device is bootflash:, slot0:,or
slot1:, and filename is the name of the file from
which you want to boot the system. In the following
example, the Flash memory card is in slot 0.
Step 1 Enter the configure terminal command at
the enable prompt, as follows:
Router# configure terminal
Step 2 At the prompt, enter configuration
commands, one per line.
Enter configuration commands, one per line.
Step 3 Press Ctrl-Z to exit configuration.
Step 4 Enter the boot system flash
bootflash:slot0: filename command, as
follows:
Router(config)# boot system flash
blootflash:slot0:
filename
Step 5 Enter the config-register command with
the value shown in the following example:
Router(config)# config-reg 0x0102
Ctrl-Z
Router#
Step 6 Press Ctrl-Z to exit enable booting mode.