Fedora
Updating
Updating to a different release involves first updating the system, and then using the system-upgrade command.
# yum -y update
# dnf system-upgrade download --refresh --releasever=30
# dnf system-upgrade reboot
See: https://fedoraproject.org/wiki/DNF_system_upgrade#How_do_I_use_it.3F
Other
Disabling Nouveau Drivers
As mentioned at https://ask.fedoraproject.org/en/question/23982/how-to-disable-nouveau-in-fedora-18/, to disable the nouveau drivers (needed to install the nvidia drivers), you have to modify the initramfs image using dracut.
# dracut --force --omit-drivres nouveau /boot/initramfs-$(uname -r) $(uname -r)
I tried to do the usual modprobe.d to black list nouveau, but it didn't seem to work. I even added nomodeset on to the grub kernel cmdline but that also didn't seem to work...
Grub2 Configuration
Grub configuration needs to be updated by running
# grub2-mkconfig -o /boot/grub2/grub.cfg
The main grub configuration file is at /etc/default/grub. You must remake the configratuion for grub after you edit this file.