Switch Memory and Configuration

Using Primary and Secondary Flash Image Options

Setting the Default Flash

You can specify the default flash to boot from on the next boot by entering the boot set-default flash command.

Syntax: boot set-default flash [primary secondary]

Upon booting, set the default flash for the next boot to primary or secondary.

Booting from the Default Flash (Primary or Secondary)

The boot command boots the switch from the flash image that you are currently booted on, or the flash image that was set either by the boot set- default command or by the last executed boot system flash <primary secondary> command. This command also executes the complete set of subsystem self- tests. You have the option of specifying a configuration file.

Syntax: boot [system [flash <primary secondary>] [config FILENAME]

Reboots the switch from the flash that you are currently booted on (primary or secondary). You can select which image to boot from during the boot process itself.

Note: This is changed from always booting from primary flash. You are prompted with a message which will indicate the flash being booted from.

system: Boots the switch. You can specify the flash image to boot from.

config: You can optionally select a configuration file from which to boot.

Booting from a Specified Flash

This version of the boot command gives you the option of specifying whether to reboot from primary or secondary flash, and is the required command for rebooting from secondary flash. This option also executes the complete set of subsystem self-tests.

Syntax: boot system flash < primary secondary >

For example, to reboot the switch from secondary flash when there are no pending configuration changes in the running-config file:

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