I'm currently running Fedora 17, and I tried to use "fedup" to upgrade to 20.  My PC has three HDD's.  One has the OS, one has the swap partition and home dir's, and the last doesn't have a Linux partition. After running fedup and restarting, GRUB comes up with the default option of "System Upgrade (fedup)".  It lists a number of OK messages and then stops with these two messages: [FAILED] Failed to mount /media/HDD.           See 'systemctl status media-HDD.mount' for details. [DEPEND] Dependency failed for Local File Systems. systemctl status media-HDD.mount gives: media-HDD.mount - /media/HDD           Loaded: loaded           Active: failed (Result: exit-code) since Sun, 05 Jan 2014 08:07:53 -06:00; 1min 5s ago           Where: /media/HDD           What: /dev/sdb1           Process: 795 ExecMount=/bin/mount /media/HDD (code=exited, status=21)           CGroup: name=systemd:/system/media/HDD-mount Fedora 17 still runs, so it's unlikely to be a hardware failure, but for some reason it looks like Fedora 20 can't mount the drive.  Can anyone offer suggestions as to what to try? Thanks