Fedora-vertical-logoThis is guide, howto upgrade Fedora 26 to Fedora 27 using DNF. This method works on desktop and server machines.

I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!

1. Before Upgrade

1.1 Backup Your Data

Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if something goes wrong and you have to do fresh install, then you can easily restore your data.

2. Upgrade Fedora 26 to Fedora 27 using DNF

2.1 Change root user


su -
## OR ##
sudo -i

2.2 Update Fedora 26 Packages

Just make sure that you have all latest packages installed.


dnf update

2.3 Reboot Your System

Just make sure that you are running latest kernel.


reboot

2.4 Install/Update dnf-plugin-system-upgrade package

It’s probably installed already.


dnf install dnf-plugin-system-upgrade --best

2.5 Start Upgrading Using DNF


dnf system-upgrade download --releasever=27

When this finish, check if there is any errors. You might need

--best

and

--allowerasing

options to get all packages downloaded.

2.6 Start (F26 to F27) Upgrade Process


dnf system-upgrade reboot

2.7 Grub 2 Menu Boot with Latest Kernel

Fedora Upgrade 27 from 26 grub2

2.8 Starting System Upgrade

Fedora Upgrade 27 from 26 Starting

2.9 dnf-plugin-system-upgrade Upgrading Fedora 26 to Fedora 27

Fedora Upgrade 27 From 26 Upgrading

Fedora Upgrade 27 From 26 Upgrading

Fedora Upgrade 27 From 26 Cleanup

3. Fedora 27 Screenshots

3.1 Fedora 27 GDM Login Screen

Fedora 27 GDM Login Window

3.2 Fedora 27 Plain Desktop Gnome Shell 3.26.1

Fedora 27 Gnome Shell 3.26.1 Plain

3.3 Fedora 27 and Gnome 3.26.1

Fedora 27 Gnome 3.26.1 Details

4. Fedora 27 Clean Up Post Upgrade (as root user)

4.1 Rebuilding the RPM DB


rpm --rebuilddb

4.2 Do Distro Sync


dnf distro-sync --setopt=deltarpm=0

4.3 Check All Your Config Files

Use rpmconf to find .rpmnew, .rpmsave and .rpmorig files. You can keep current version, place back old version, watch the diff or merge.


dnf install rpmconf

rpmconf -a