How to remove Lubuntu?

[beew]

I installed Maverick in an old machine. I then decided to see if there is significant performance gain if I installed Lubuntu instead. So I created a dual boot with Lubuntu 10.04 in another partition for testing. Now I want to remove Lubuntu and give the whole hard disk back to Maverick

If I just delete Lubuntu with gparted (using a live usb) I think I would run into problems because I need to restore grub2 to maverick. I read about it briefly but forget how to do it (haven't done that before)

Please tell me what the proper procedure is. Thanks.

[TeoBigusGeekus]

While in Maverick, use gparted to format the lubuntu partitions expand the maverick ones. Don't interrupt gparted at any cost.
After that, open terminal and give

grub

then

grub install /dev/sda

Replace /dev/sda with the appropriate partition - i.e. where do you want grub to be installed.
Finally

sudo update-grub

[beew]

Thanks. Will try that when I get home.

[amjjawad]

Hello my friend

Did you install Lubuntu's boot loader in the MBR?

[beew]

Hi,

I think so. I carved out a small partition for it with gparted and then install Lubuntu in that partition, choosing manual installation so I could create a /root and /home partitions( I was preparing for a possibility that I might keep Lubuntu instead of Maverick. But it turned out I could get the same performance gain by simply switching between compiz and openbox and removing pulseaudio in Maverick)

On the boot screen the Lubuntu option appears on top and system would automatically boot into it if I do nothing. So it seems that Lubuntu's bootloader was installed.

[amjjawad]

Hi,

I think so. I carved out a small partition for it with gparted and then install Lubuntu in that partition, choosing manual installation so I could create a /root and /home partitions( I was preparing for a possibility that I might keep Lubuntu instead of Maverick. But it turned out I could get the same performance gain by simply switching between compiz and openbox and removing pulseaudio in Maverick)

On the boot screen the Lubuntu option appears on top and system would automatically boot into it if I do nothing. So it seems that Lubuntu's bootloader was installed.

If you didn't choose where to install the boot loader so yes, most likely it was installed in the MBR.

Hope you'll be able to fix it as per the steps mentioned above

[beew]

While in Maverick, use gparted to format the lubuntu partitions expand the maverick ones. Don't interrupt gparted at any cost.
After that, open terminal and give

grub

then

grub install /dev/sda

Replace /dev/sda with the appropriate partition - i.e. where do you want grub to be installed.
Finally

sudo update-grub

I just deleted Lubuntu. When I typed "grub", it said package not installed. So I installed it and tried again and after typing grub I got a prompt that looks like grub> When I entered "grub install /dev/sda1" it said "command not found". I entered just "install /dev/sda1" and still the same.

Now I am going to reboot and will find out whether it works or not.

[TeoBigusGeekus]

My mistake, sorry... It should be

sudo grub-install /dev/sda

Even if you can't boot, you can easily do it with a live cd.

[beew]

Ok, bad news. It doesn't work. I rebooted and get a black screen with the line "error: no such partition"
and the prompt

grub rescue>

Someone please rescue me.

[TeoBigusGeekus]

Again

sudo grub-install /dev/sda

where /dev/sda is the hd you want to install grub to.