Ubuntu does not put Fedora into GRUB menu

Solution 1:

Mount the other partition, and then run sudo update-grub.

To do that, open nautilus, and then right click the drive like shown below and click "Mount":

After that, run sudo update-grub in a terminal.

Fedora should show up. Now when you reboot, you can select it.

Solution 2:

The OP asked "How can I get Fedora back in my boot menu?"; at least one answer was provided that resolved the same issue that I had with Ubuntu & Fedora boot menus. Might wanna mark it as "Solved"?

Here's another link to the Fedora forums where the same problem was resolved by an answer that was posted here, and the thread was consequently marked as "Solved":

Grub (Ubuntu) does not detect Fedora 17

Solution 3:

This may be a bug in 12.10....

Can you boot in to Ubuntu 12.04, then run boot repair or use the following commands to see if you get access to Fedora from grub?

sudo grub-install /dev/sdX
sudo update-grub

Replacing sdX with the actual drive, which will probably be sda, but use disk utility to double check if you are unsure.