Copy Your Linux Install to a Different Partition or Drive
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/destinationDon’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
$ 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.lstThis will tell you what your new drive and partition’s number is. (Something like hd(0,0))
root hd(0,0)but replace "hd(0,0)" with your partition’s number from above.
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.
- March 2015 Issue of Linux Journal: System Administration
- High-Availability Storage with HA-LVM
- DNSMasq, the Pint-Sized Super Dæmon!
- Localhost DNS Cache
- Real-Time Rogue Wireless Access Point Detection with the Raspberry Pi
- Days Between Dates: the Counting
- You're the Boss with UBOS
- The Usability of GNOME
- Multitenant Sites
- Linux for Astronomers