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I hope someone here can help me: I re-installed my Windows 7 partition and now I cannot boot to Ubuntu 14.04 any more - no grub boot-menu is display instead directly the "Loading windows" screen is shown.

If I go to the boot menu in BIOS I can select my Ubuntu - drive and boot from it (which is quite cumbersome).

So I tried to use "boot-repair" as described at at the help pages but the program exits with an error.

This is the link I get from "boot-repair": http://paste.ubuntu.com/7558812/

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Thank you for pointing me in the right direction - here is the fix for the problem:

  1. Start via Live-CD
  2. Mount Linux partition
  3. $ sudo grub-install --root-directory=/media/ubuntu/e2eec732-eb12-47e4-8c4d-5f50d4ad5986/ /dev/sdb"
    
  4. Restart
  5. In BIOS change boot priority of devices - prio 1 is Linux
  6. Fixed - grub is loaded first and the Windows can be selected.
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Its very simple and works for me

Insert Ubuntu cd and select try Ubuntu, connect to Internet. Open terminal ( Ctrl+Alt+T ),

Login as root:

sudo -i

Find out your linux disk :

fdisk -l

Mount it:

mount /dev/sdaX /mnt

Recover:

grub-install --root-directory=/mnt /dev/sda
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Boot into the install disk and type in sudo grub-update /dev/sda (open gparted though to make sure you have the right disk, if the Ubuntu partition is mounted somewhere else then type in the Mount point instead of /dev/sda/ as it could be something like sdab or /media/sda .

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