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From Dual Boot to Single Boot (Windows + Ubuntu) to Ubuntu

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Hi,

I have a strange setup situation. I have a HDD with 2 primary partitions. My first OS was Windows 7 64 bit and I then installed Ubuntu as Dual Boot with GRUB bootloader.

After lot of server based configuration on my Ubuntu Server, I am required to create multiple environments with similar setups on my other server.

Can I make a TI back up of Ubuntu and then restore it as Main OS on new machine? If yes, can anybody please explain how it can be done.

Thanks,
Binoy

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Hello Binoy,

Let me assist you.

Yes, you can back up your Ubuntu installation with Acronis True Image and later restore it to a different hardware. However, you will need to configure the restored system before you can boot it, at least, you'll have to reactivate GRUB.

  1. Boot from Linux installation CD and enter rescue mode;
  2. Mount all partitions and change root from the temporary root to the root partition of the installed system:
    • #mkdir /mnt/tmp
    • #mount /dev/sdXY /mnt/tmp (/dev/sdXY is the root partition)
    • #chroot /mnt/tmp
  3. Generate /etc/mtab:
    • #grep -v rootfs /proc/mounts > /etc/mtab
  4. Check if the GRUB configuration file is correct:

    GRUB stores its configuration in either /boot/grub/grub.conf or /boot/grub/menu.lst depending on the distribution you are using.

  5. Reactivate GRUB automatically:

    Run the following command:

    where /dev/[device name] is the name of disk/partition where you are going to install GRUB.

    • #grub-install /dev/[device name]

    • #grub-install /dev/sda
  6. Reactivate GRUB manually in case Step 5 fails:

    You will receive a prompt:

    Please issue the commands (4 is the root partition in this example):

    You will see the output:

    • #/sbin/grub
  7. Reboot.

If the restored system still can't boot, please rebuild Ramdisk as described at this KB article.

Please reply to this thread if you have any additional questions.

Thank you.