Make a Flash Memory Card Image Bootable

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-Zto exit conﬁguration mode.

Step 6 Enter the copy running-conﬁg

startup-conﬁgcommand 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-Zto 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-registercommand with the value shown in the following example:

Router(config)# config-reg 0x0102

Ctrl-Z

Router#

Step 6 Press Ctrl-Zto exit enable booting mode.