Ubuntu: Remove one Ubuntu installation using another



Question:

I have two installations of Ubuntu 15.10 on my laptop, and I want to get rid of one of them. How can I remove one of them? I've seen a lot of answers to questions, but they all deal with how to install from a startup disk or something like that, and wipe the hard drive. I want to keep one installation of Ubuntu, and remove the other.


Solution:1

So, you have Ubuntu A and Ubuntu B. Let's say you boot up in Ubuntu A that you want to keep. Open GParted, unmount partition with Ubuntu B then select swap partition (if any), right-click on it and choose swapoff. Swapoff is important, so don't miss it. Select partition with Ubuntu B and delete that partition. Apply changes.

Open a Terminal window and type:

sudo update-grub

Close Terminal and reboot. After restart, only one Ubuntu (ex-A) should appear in the boot menu.


Solution:2

You can use GParted to format the partition and then run an upgrade grub command to update bootloader that the partition no longer has an OS.


Solution:3

If the two installation are on separate partitions and don't have any common mount points like /home or /bin, you can pretty much safely format the unwanted partition and generate new grub menu entries.


Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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