Ok, problem solved, but I'm not sure of what was the solution. I tried :
1- Create 2 partitions (80Gb each) instead on one;
2- Added the jumper to force the HDD to Master (on the primary);

And it worked. I suspect the jumper... that's weird anyway. And yes IDE is PATA, I got a little confused because one HDD had IDE written on it and the other PATA.

Thanks for support.