I did the preupgrade testcase on 2 systems form F11 to Rawhide and
neither went well at all.. On a x86_64 machine with nvidia graphics,
the preupgrade procedure went fine, but after the upgrade, X would not
start. I tried again on a 32 bit laptop with ati graphics. The
display was blank during the upgrade. I just waited for the hard
drive to stop for a few minutes and rebooted with CRTL-ALT-DEL. After
reboot the screen was again blank.
Is using preupgrade the best way to upgrade a fedora installation?