sd card intern mod "can't init file system"

[lolof]

It is working if i let the dreamcast open. (without the top part).
It is surely a heating problem.
I have one of the first jap model with heatpipes, I will try to add some past between the processor and heatpipes...
The dreamcast does not crash, it is only the access to the sd card who is stopping.
Maybe the part of the cpu who managed the serial port freeze because the limit of temperature is almost reached!
If it does not work, i will do some photos.