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I just installed Linux Mint 15 With live usb alongside my old fedora 19 on my Server but it doesn't show up in grub. it shows up when I use OS prober:

$ sudo os-prober
/dev/sda5:Linux Mint 15 Olivia (15):LinuxMint:linux

But not in the grub bootscreen.

Any ideas?

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Did you select "Install grub" when installing Linux Mint? Are those the results from running os-prober from within Mint, or from within Fedora? What happens if you run sudo update-grub from Fedora? – John Bensin Sep 26 '13 at 18:19
OS-prober results are from within fedora I can't even figure out how to boot mint since its not on the grub menu. sudo: update-grub: command not found – Cnorwood7641 Sep 30 '13 at 15:16
Try installing update-grub first: sudo yum install update-grub. – John Bensin Sep 30 '13 at 15:30
up vote 1 down vote accepted

On your Fedora installation, run the following:

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

This will update your grub configuration and you should see your new system in the menu.

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