Can't find volume groups in grub

I have a hot swappable hard drive that I use at school and I installed the dock for it at home today, I knew it probly would give me hickups but i didnt think this would happen.

after i select fedora in the grub boot loader I get

"... Red Hat nash version 6.0.19 starting
reading all physical volumes. this may take a while...
no volume groups found
volume group "main" not found
unable to access resume device (/dev/main/swap)
mount: could not find filesystem '/dev/root'
setuproot:moving /dev failed: No such file or directory
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
switchroot: mount failed: No such file or directory
"
and then it hangs..

not sure what to do or what the problem is, any ideas? far as I know main is there so I dont know... thanks in advance!

 

Try this FedoraForum Link-