The event is then triggered every-time you start Iris Manager and pressing the PS Home button.
So if you have done it once there is no more need to unplug/plugin the USB drive/pen again. Soft Reboot/Rebot/Shutdown etcetera .. .
What this is is good for is no more Disc in drive when starting a game. It has nothing to do with Dean's "skip data install".
This mode doesn’t work for those who have a broken BD-Drive or don’t have a working lector.
But still no disc in drive