Failed upgraded cannot fix

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http://forums.fedoraforum.org – Let me preface this by saying I've been running Fedora since Core 1 (and when it was Redhat 5 and up). I had been running Fedora 16 and wanted to update to 18 (After finding out that I had to go to Fedora 17 1st, I did that). It failed (giving me all sorts of issues). Once I managed to get it stable, I did the install of fedup and ran it. It downloaded it/etc and did the RPM upgrades. Then on reboot it fails. It gets to the "GRUB" screen then hangs. After having to reboot using the fedora 17 disk (Fedora 18 troubleshooting didn't see my Linux LVM partitions). I managed to (HowTos)