How to trigger on hub reboot?

How do I trigger a rule when my Hubitat boots/reboots?

Location event "systemStart".

Thank you.

Note: a reboot may take your system some minutes to settle, and CPU usage may be high during that time, so take that into account when using the reboot event as a trigger.

I put a delay as first thing in my rule to give the hub time to finish before doing the rest of the rule

if I subscribe my app to hub info driver - can I watch for a reboot being triggered? I'd like to race a flag to my own app that sets a state to be monitored.. I'm watching already on the reboot afterwards, but i still get temporary mode problems initially (for about 6 mins) .. here's my watch guard settings: