In the fstab configuration is the parameter delay_root. My system (Onion Omega2) has this configured as 5 seconds but on the internet I find many other devices where it is configured as 0 seconds.
The OpenWrt wiki is very short in the explanation of this parameter:
"wait X seconds before trying to mount root devices on boot"
I have an application where the user will insert and remove the USB stick often. For a good user experience I would like to create a quick response on the user inserting the USB drive.
Why was this delay parameter created? It feels weird to introduce a delay.
Would the system respond faster when I change this setting to 0 seconds?
What are possible negative effects of reducing this delay?