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• During boot, when the Hit any key to stop autoboot prompt appears, pressing any key before the timer expires brings the OnBoard appliance to U-Boot monitor mode.The U-Boot hw_boot command boots from either the first or second image according to the value of the currentimage environment variable. You can use the following procedures to change which image is used for booting.
# reboot
3. During boot, when the Hit any key to stop autoboot prompt appears, press any key before the time elapses to stop the boot. The U-Boot monitor prompt appears.
=> help
=> setenv currentimage 2
=> hw_boot
2. Boot by entering hw_boot followed by the single argument, as shown in the following example.
=> hw_boot single