Small problem with internal sd card mod

[lolof]

Hello,

I have done the internal sd mod with access led on my Dreamcast.

By the way, is this normal that the led light up directly during the boot process of the dreamcast (without the dreamshell disc inserted) ????
I mean, if I am playing a disc game for example, the led always light up.

When I use the dreamshell disc and load the dreamshell, all is normal, Led light up when there is access to sd card and doesn't light at all when there is no access.

This is very strange....

I use a resistor 470 ohms just before the LED as described in the tutorial I found on internet.

Does it means that the DC in normal mod constantly send a voltage through the pin 10 of the serial port ???

I would like to solve this small problem.

Thank you for your help