Cisco Systems RSP8 Enabling a Boot from the Flash Disk

Route Switch Processor (RSP8) Installation and Configuration Guide

OL-4920-02

Reference Information

To disable the Break function and enable theboot system flash device:filename command, use the

config-register command with the value shown in the following example:

Router(config)# config-reg 0x0102

Router(config)# end

Router#

Enabling a Boot from the Flash Disk

Toenable a boot from the Flash Disk, set configuration register bits 3, 2, 1, and 0 to a value between 2

and 15 in conjunction with the boot system [disk0: | disk1:]filename configuration command. This

sectionincludes only descriptions of boot commands specific to the Flash Disk. (You can use either the

slotn: argument or the diskn: argument forboot commands.)

Following are definitions of the various Flash Disk-relatedboot commands:

boot system flash disk0:—Boots the first file in the Flash Disk in slot 0.

boot system flash disk1:—Boots the first file in the Flash Disk in slot 1.

boot system flash disk0:herfile—Boots the file namedherfile from the Flash Disk in slot 0.

boot system flash disk1:hisfile—Boots the file namedhisfile from the Flash Disk in slot 1.

Note As you use boot commands, pay attention to howyou use the Spacebar, which influences the way your

system interprets the commands. Also, be sure that you define the entire path to a file as you type the

boot commands; otherwise, the system might not be able to find the file.

For example, notice the difference in the following correct and incorrect commands:

System(config)# boot flash system disk0:myfile

Based on the preceding correct command, the system boots the file specified (myfile).

System(config)# boot flash system disk0: myfile

Based on the preceding incorrect command, the system findsthe filename field blank because there is a

space after disk0:. In this case, the system ignores the filenameargument and boots the first file on the

Flash Disk, which might not be the file calledmyfile.

Use the following procedure to enable booting the filemyfile from a Flash Disk:

Step1 Enter global configurationmode and specify an image filename in the PC Card slot from which to boot

by using the configure terminal command, as follows:

System# configure terminal

Enter configuration commands, one per line. End with CTRL-Z.

System(config)# boot system flash disk0:myfile

Step2 Enable the boot system flash disk0:myfile command using theconfig-register command with the

hexadecimal value shown in the following example:

System(config)# config-reg 0x2102