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If you need to move your Linux installation to a different hard drive or partition (and keep it working) and your distro uses grub this tech tip is what you need.
To start, get a live CD and boot into it. I prefer Ubuntu for things like this. It has Gparted. Now follow the steps outlined below.
- Mount both your source and destination partitions.
- Run this command from a terminal:$ sudo cp -afv /path/to/source/* /path/to/destination
Don’t forget the asterisk after the source path.
- After the command finishes copying, shut down, remove the source drive, and boot the live CD again.
- Mount your destination drive (or partition).
- Run the command “gksu gedit” (or use nano or vi).
- Edit the file /etc/fstab. Change the UUID or device entry with the mount point / (the root partition) to your new drive. You can find your new drive’s (or partition’s) UUID with this command:$ ls -l /dev/disk/by-uuid/
- Edit the file /boot/grub/menu.lst. Change the UUID of the appropriate entries at the bottom of the file to the new one.
- Run sudo grub.
- At the Grub prompt, type:find /boot/grub/menu.lst
This will tell you what your new drive and partition’s number is. (Something like hd(0,0))
- Type:root hd(0,0)
but replace „hd(0,0)“ with your partition’s number from above.
- Type:setup hd(0)
but replace „hd(0)“ with your drive’s number from above. (Omit the comma and the number after it).
That’s it! You should now have a bootable working copy of your source drive on your destination drive! You can use this to move to a different drive, partition, or filesystem.