Setting the Boot Firmware Image

You can set the boot firmware image, which is the image that will be loaded automatically after the system has been reset.

To set the boot firmware image, use the set boot system command.

set boot system filename

The system must be reset by software for the new boot image to take effect at startup. If the chassis is powered OFF and then back ON, the current active image will just reload at startup

Although it is not necessary to choose to reset the system and activate the new boot image immediately, the CLI will prompt you whether or not you want to do so. You can choose “Yes” at the question prompt to have the system reset and load the new boot image immediately, or choose “No” to load the new boot image at a later scheduled time by issuing one of the following commands: clear config, reset, or configure. The new boot setting will be remembered through resets and power downs, and will not take effect until the clear config, reset, or configure command is given.

System(rw)->set boot system newimage
This command can optionally reset the system to boot the new image.
Do you want to reset now (y/n) [n]?y
Resetting system ...