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With an Ubuntu Live Disc, I have copied my Ubuntu 10.04 installation to a new harddisk (with the same hardware). However, it doesn't boot, since I think I still need to set up grub for this new installation.
How do I set up grub2 for a copied Ubuntu installation?
All the tutorials for grub2 didn't really help me...

running

update-grub

on the "original" Ubuntu installation doesn't find the copied Ubuntu installation.

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How exactly did you clone the Ubuntu installation? – Jordan Uggla Mar 2 '11 at 9:38
I used gparted from a Ubuntu 10.10 live disk. In gparted, you can "copy/paste" a whole partition. – ptikobj Mar 2 '11 at 10:57
I'd have used clonezilla clonezilla.org/downloads.php , another solution is while booted in live mode, mount your partition by either clicking on it in nautilus or sudo mount /dev/sdaX /mnt (replace X with partition number) and from terminal do sudo grub-install --root-directory=/mnt /dev/sda reboot into installed ubuntu and run sudo update-grub – duffydack Oct 29 '11 at 8:53

1 Answer

up vote 3 down vote accepted

Here is the solution I used... It's in german, unfortunately.

It's basically the same as described in the Ubuntu wiki:

  1. In a Live-CD session run: sudo fdisk -l to determine the disk name X and the partition number Y of your Ubuntu installation - should be of form /dev/sdXY.
  2. run sudo mount /dev/sdXY /mnt
  3. run sudo grub-install --root-directory=/mnt/boot /dev/sdX
  4. Reboot.
  5. Update the grub menu: sudo update-grub
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