To disable Service auto start from Raspberry PI

To prevent services from starting during boot on your Raspberry Pi, you can disable them. One way to do this is by using the update-rc.d command. Here’s how:

1. Open a terminal window on your Raspberry Pi.
2. Type sudo update-rc.d -f <service-name> remove and press Enter. Replace <service-name> with the name of the service you want to disable.
3. Repeat step 2 for each service you want to disable.

Most services do not consume processing power when they are not active. They will only take CPU time if they are active. Normally, they will be dormant waiting for an event. However, some services could do some background tasks and consume CPU cycles, in addition to the memory footprint of the software ¹. Therefore, it is always safer and more robust to only start services and software you actually need ¹².

I hope this helps!