Well, after thinking deeply,
I tryied to update with the same CD-Rom I installed Madrake.
A listing of content appears and you can choose to configure each one, just like at the install, and then choosed to switch on Text mode booting and change to move the booting partition, from hda1 to hda....
well, I just don't really know which change make my Linux booting, but it works..
Hope my problem can help somebody..
bye
