The exact error message was "WARNING: problems were encountered during transaction test: broken dependencies kmod-VirtualBox-3.12.5-200.fc19.x86_64-4.3.6-1.fc19.1.x86_64 requires kernel-3.12.5-200.fc19.x86_64 Continue with upgrade at your own risk." In response I removed kmod-VirtualBox, akmod-VirtualBox, and VirtualBox. Then I did a fedup --clean and reattempted fedup --network 20. This went well until the reboot. Following the reboot I select the Fedup option, but nothing really happened. I ended up back in my Fedora 19 system while running the new Fedora 20 kernel. As an update on the other machine where I was having problems with the net install. I checked for any meaningful logs but found that none exist. The /var/log directory hasn't even been created. So, then I tried to run a grub2-mkconfig, grub2-install, dracut series to potentially fix the problem. The file sizes did change a bit, but the end result was the same. BrianWhat "dependency error" did it report? And how did you query the installed packages as well as the remote repos for what would be available _after_ the upgrade? Many users still misread such error messages and don't manage to work around them as a result. Often, the installed packages are okay, but during they upgrade they would get replaced and break dependencies.