On Fri, Nov 18, 2016 at 02:02:39PM -0700, jd1008 wrote:
How about updating f20 to 21 with yum -y upgrade --releasever=21 Would that work?
Probably -- see the caveats at https://fedoraproject.org/wiki/Upgrading_Fedora_using_package_manager.
Additionally, old releases are moved off of the mirrors (to save hundreds of terabytes of disk space worldwide), so you'll need to update your repo files to point to http://archive.fedoraproject.org/pub/archive/fedora/linux/updates/.
Again at some point this becomes more work than just doing a fresh install..... :)