Use this procedure to configure OpenBoot so that a host reset or power on either attempts to boot automatically, or not. This change is permanent but only takes effect after a host reset.
See one of these tasks:
true – (Default) The host automatically attempts to boot from the devices specified in boot-device.
false – The host does not automatically boot. You can boot manually.
For example:
ok setenv auto-boot? false
ok printenv auto-boot? auto-boot? = false
ok reset-all
The host resets. After initialization, the host attempts to boot or not based on your configuration.