after formating the various partitions the installation dumps.
Created attachment 14163 [details]
in fact, now I remember, it was already after the installer detected a problem
with my graphic card (I have a Matrox G450 and it gave me the possibility of
choosing the Matrox G400, which I did). only then it crashed.
by the way, I was running on text mode because the graphic mode didn't work.
*** This bug has been marked as a duplicate of 18032 ***