Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have an HP with a 160GB SSD Primary drive and a 500 GB Secondary drive. I shrank the 500 GB partition to create space to install Ubuntu 12.04 and Fedora 16.

I started by following this tutorial how-to-triple-boot-fedora-15-ubuntu-11-04-and-windows-7

The only noticeable difference that I found was that I had to create the boot entry for Fedora as GRUB 2. After installing Fedora and adding the entry to the windows boot loader Fedora launched fine.

I then installed Ubuntu 12.04 and instructed the installer to place Grub in the /boot partition that I made for Ubuntu. After the install completed I made another windows boot entry for Ubuntu.

Now when I try to launch Fedora I am brought to the Ubuntu grub loader and I can't figure out how to get Grub to detect the Fedora installation.

Do I only need one /boot partition since both distros use Grub2? Or because I used LVM per the tutorial Grub2 can't detect the other distro?

I'm basically a linux noob but I do have a little experience with Ubuntu.

Output from fdisk -l

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x14df4121

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   725110783   362554368    7  HPFS/NTFS/exFAT
/dev/sdb2   *   725110784   726134783      512000   83  Linux
/dev/sdb3       726134784   850939903    62402560   8e  Linux LVM
/dev/sdb4       850941950   976771071    62914561    5  Extended
Partition 4 does not start on physical sector boundary.
/dev/sdb5       850941952   851916799      487424   83  Linux
/dev/sdb6       851918848   863635455     5858304   82  Linux swap / Solaris
/dev/sdb7       863637504   883167231     9764864   83  Linux
/dev/sdb8       883169280   976771071    46800896   83  Linux

Thanks for any help in advance.

Jeremie

share|improve this question
    

1 Answer 1

You only need to install a bootloader (grub) once. It will then automatically detect and all you to boot all the OSes on your machine.

If you wanted to do a clean install of grub, but into the ubuntu liveCD and try this, replacing /dev/sda1 with the partition that has ubuntu on it:

sudo su

mkdir /mnt/root

mount -t ext4 /dev/sda1 /mnt/root

mount -t proc none /mnt/root/proc

mount -o bind /dev /mnt/root/dev

mount -o bind /sys /mnt/root/sys

chroot /mnt/root /bin/bash

sudo grub-install /dev/sda

sudo update-grub

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.