x86: Fast Rebooting a ZFS Root File System

The fast reboot feature provides the ability to reboot within seconds on x86 based systems. With the fast reboot feature, you can reboot to a new kernel without experiencing the long delays that can be imposed by the BIOS and boot loader.

You must still use the init 6 command when transitioning between BEs with the beadm activate command. For other system operations, use the reboot command as appropriate.