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hsinxh
Asked: 2011-08-31 18:42:01 +0800 CST

Unable to boot into Ubuntu after Ubuntu-Fedora Dual Boot

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I tried to dual boot Ubuntu and fedora, but now I am unable to boot into my Ubuntu installation. Here is the situation I had Ubuntu installed already on /dev/sda2 and I resized it to create another partition /dev/sda3 . I installed fedora 15 on /dev/sda3 . Now I can boot into fedora but there in to option to go into Ubuntu. Swap partition is on /dev/sda1.

Swap /dev/sda1
Ubuntu /dev/sda2
Fedora /dev/sda3
dual-boot

1 Answers

  1. Best Answer

    Fedora 15 still uses grub legacy for boot, and it overwrites Ubuntu's Grub 2 boot loader and menu. And Grub legacy does not find Ubuntu install out-of-the-box.

    To restore Ubuntu's boot, all you have to do is re-install grub2.

    Do this:

    • Boot using Ubuntu's Live CD
    • Open Nautilus, and double-click Ubuntu's partition. Take note of its mount point directory (if you labeled the partitions, it will be something like /media/label

    • Now open terminal and issue:

      sudo grub-install --root-directory=/media/your-ubuntu-label /dev/sda

    • You may boot into Ubuntu now.

    • If you want to add Fedora 15 to Ubuntu's (grub2) boot list, do this:

      sudo update-grub

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