Boot; Appendix A Boot Loader Command - Cisco Catalyst 3550 Command Reference Manual
Multilayer switch
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Also See for Catalyst 3550:
- Command reference manual (794 pages) ,
- Installation manual (154 pages) ,
- Hardware installation manual (106 pages)
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boot
boot
Use the boot boot loader command to load and boot an executable image, and enter the command-line
interface.
Syntax Description
-post
filesystem:
/file-url
Defaults
The switch attempts to automatically boot the system by using information in the BOOT environment
variable. If this variable is not set, the switch attempts to load and execute the first executable image it
can by performing a recursive, depth-first search throughout the Flash file system. In a depth-first search
of a directory, each encountered subdirectory is completely searched before continuing the search in the
original directory.
Command Modes
Boot loader
Command History
Release
12.1(4)EA1
Usage Guidelines
When you enter the boot command without any arguments, the switch attempts to automatically boot the
system by using the information in the BOOT environment variable, if any. If you supply an image name for
the file-url variable, the boot command attempts to boot the specified image.
When you set boot loader boot command options, they are executed immediately and apply only to the current
boot loader session. These settings are not saved for the next boot operation.
Filenames and directory names are case sensitive.
Examples
This example shows how to boot the switch using the new-image.bin image:
switch: boot flash:/new-images/new-image.bin
After entering this command, you are prompted to start the setup program.
Related Commands
Command
set
Catalyst 3550 Multilayer Switch Command Reference
A-2
boot [-post] filesystem:/file-url ...
(Optional) Run the loaded image with an extended or comprehensive power-on
self-test (POST). Using this keyword causes POST to take longer to complete.
Alias for a Flash file system. Use flash: for the system board Flash device.
(Optional) Path (directory) and name of a bootable image. Separate image names
with a semicolon.
Modification
This command was first introduced.
Description
Sets the BOOT environment variable to boot a specific image when the
BOOT keyword is appended to the command.
Appendix A
Boot Loader Commands
78-11195-09
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