In my experience, doing this at boot time doesn't help. It only finds the controller after an sd card has been inserted.
If there is an sd card present at boot time then the rescan is unnecessary as the controller is found anyway.
In my experience, doing this at boot time doesn't help. It only finds the controller after an sd card has been inserted.
If there is an sd card present at boot time then the rescan is unnecessary as the controller is found anyway.