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After update from 12.04 to 12.10 beta, stuck on grub rescue

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linux-howto

http://askubuntu.com – I just tried to upgrade my system from 12.04 to 12.10 beta. Everything seemed to go fine, but at reboot, it just drops to grub rescue with a "file not found" error. Trying to follow some tutorials online, I setup all the variables, and they seem to be ok, but when I try to enter insmod normal I get a "file not found" error. I checked with ls /boot/grub and there are several files there (load.cfg, grub.cfg, affs.mod and others) but no normal.mod. So I can't go into normal mode. What can I do? Would things be easier by using a livecd, and if so, what should I do? Thanks Cristian (HowTos)