after launching preupgrade and after the correct loading of all packages, I rebooted the laptop as required by preupgrade (the OS run on a USB disk) as usually. From the GRUB menu I chose the option to upgrade to FC16.
It began to upgrade the packages but almost near the end the following fatal error appeared:
Error installing Package: a fatal error occurred when installing the gridengine package. This could indicate error when reading the installation media. Installation cannot continue. Exit installer
This happened three times, and every time I had to re-load the old FC14. What is the media mentioned in the error? I cannot believe that there was an error reading the disk three times at exactly the same point!!!
Do I need the DVD installation media?