Boot - Cisco Catalyst 3560-X Command Reference Manual

Appendix A Catalyst 3750-X and 3560-X Switch Boot Loader Commands

boot

Syntax Description
Defaults
Command Modes
Command History
Usage Guidelines
Examples
OL-21522-02
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Use the boot boot loader command to load and boot an executable image and to enter the command-line
interface.
boot [-post | -n | -p | flag] filesystem:/file-url ...
-post (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.
-n (Optional) Pause for the Cisco IOS debugger immediately after starting.
-p (Optional) Pause for the JTAG debugger right after loading the image.
filesystem: Alias for a flash file system. Use flash: for the system board flash device.
/file-url (Optional) Path (directory) and name of a bootable image. Separate image names
with a semicolon.
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.
Boot loader
Release
12.2(53)SE2
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.
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.
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Modification
This command was introduced.
Catalyst 3750-X and 3560-X Switch Command Reference
boot
A-3