Datasheet

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Using the Flash Disk
OL-6452-04
Obtaining Documentation, Obtaining Support, and Security Guidelines
This command, with the hexadecimal value 0x2102, results in the following:
• Enables the system to boot the default boot ROM software if the Flash Disk-based image fails to
boot—hexadecimal value 0x2000
• Disables Break—hexadecimal value 0x0100
• Enables the image myfile as the default boot image—hexadecimal value 0x0002
Step 3 Press Ctrl-Z to exit configuration mode:
System(config)#
Crtl-Z
System#
Step 4 Save the new configuration to NVRAM by using the copy system:running-config
nvram:startup-config command as follows:
System# copy system:running-config nvram:startup-config
Making a Flash Disk-Based Software Image the Bootable Software Image
This section explains how to make a Flash Disk-based Cisco IOS software image a bootable image.
After you copy a software image to the Flash Disk, use the following series of commands to make the
image bootable (the file named new.image in this example). The software image in this example is
located on the Flash Disk in PC Card slot 0. Note that the config-register command is also a part of this
command sequence because you must set the configuration register to 0x2102 to enable loading an image
from the Flash Disk.
System# config terminal
System(config)# no boot system
System(config)# boot system flash disk0:new.image
System(config)# config-register 0x2102
Ctrl-Z
System# copy system:running-config nvram:startup-config
System# reload
When the system reloads, it boots the image new.image from the Flash Disk in slot 0.
Obtaining Documentation, Obtaining Support, and Security
Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback,
security guidelines, and also recommended aliases and general Cisco documents, see the monthly What’s
New in Cisco Product Documentation, which also lists all new and revised technical documentation at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html.