Booting From Flash Memory; Copying Files - Cisco 12406 Installation And Configuration Manual

Using Flash Memory Cards in the RP

Booting from Flash Memory

Copying Files

Caution
Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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To enable booting from Flash memory, set the boot field in the software
configuration register (bits 3 through 0) to a value between 2 and 15. These values
are used 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.
To enter global configuration mode while the system is running and specify a
Flash filename from which to boot the system, enter the configure terminal
command at the privileged EXEC mode prompt on the system console, as follows:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# boot system flash device:filename
To disable the Break function and enable the boot system flash device:filename
command, enter the config-register command at the global configuration mode
prompt with the configuration register value, as shown below:
Router(config)# config-reg 0x0102
Ctrl-Z
Router#
Copy a new Cisco IOS software image to Flash memory when a new image
becomes available or when you want to back up the image. This section explains
how to copy any type of file to the Flash memory SIMM on the RP or to a
PCMCIA Flash memory card inserted in either slot 0 or slot 1.
You cannot copy a new Cisco IOS software image into the onboard Flash memory
SIMM (also referred to as bootflash) while the system is running from onboard
Flash memory.
To avoid losing valid Cisco IOS images, upgrade your Cisco IOS software images
in Flash memory one at a time. Upgrade your PCMCIA-based Flash memory
separately from the onboard Flash SIMM (bootflash) on the RP.
Chapter 3 Installing the Router
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