How can I get back ubuntu 11 version which is already installed IN HD

[RAISINGSUN]

How can I get back ubuntu 11 version which is already installed on my hard disk as the boot grub menu withouting installing ubuntu again or formatting again

Wel l I was using ubuntu 9.10 and xp dual booting

It was updated to 10.LTS later to 11 version but due to viruses I format my system and installed new os windows xp in another drive and again installed ubuntu 9.10 version and I found the 11 version which was upgraded previously was not formatted (deleted) and working fine and good condition. Due to again viruses attack I formatted my win xp

When I used to turn on my system it used to ask for the selection of OS like ubuntu or xp(grub menu)

I verified that my computers right click->select manage->under storage->under disk management-> I can see extra four partition (two for ubuntu and other two for swap space )

Can anyone suggest me how can I get back ubuntu which is already installed at present I am using the win xp now I am using xp as mine current os

[oz]

Hello

Windows will always overwrite the bootloader when it is installed after Linux, but you can check the following HowTo for a number of ways to restore your GRUB bootloader:

https://help.ubuntu.com/community/Re...tallingWindows

[devils casper]

Boot up from LiveCD of any Linux distro and execute this in Terminal :

sudo fdisk -l

Post output here.

** Its small L in fdisk -l.

[Mudgen]

Ozar, as usual, gives good advice. The "grub-install" option in his link will probably get you where you want to be.

[devils casper]

Ubuntu 11.x uses GRUB2 and grub-install command won't work for that. Command for GRUB2 is 'sudo update-grub /dev/sdx' where x is disk name. Procedure is also different for GRUB2.

[Mudgen]

Ubuntu 11.x uses GRUB2 and grub-install command won't work for that. Command for GRUB2 is 'sudo update-grub /dev/sdx' where x is disk name. Procedure is also different for GRUB2.

This Red Hat guy (me) should probably keep his nose out of the Ubuntu forum.

[oz]

Oops... sorry RAISINGSUN. I had not noticed they haven't upgraded their howTo to include GRUB2. The only hint they give on that howTo is the link to GRUB2. If you'll check the link to the GRUB2 howTo, you'll find some info there on reinstalling GRUB2:

https://help.ubuntu.com/community/Gr...stalling_GRUB2

Hope it helps you.

[Ikai]

1- Boot from a live CD of Ubuntu

2- To see your partition table:

sudo fdisk -l

3- Localize the partitions where Ubuntu11 is, such as /boot, /, and /home.

4- This is assuming that your system is on dev/sda and that your root partition is on dev/sda3, boot partition on dev/sda2 and home partition on dev/sda4. But you'll replace the number of the partitions according to what you have on your partition table.

a) sudo mount /dev/sda3 /mnt
b) sudo mount /dev/sda2 /mnt/boot
c) sudo mount /dev/sda4 /mnt/home

Mounting all other partitions:

d) sudo mount --bind /dev /mnt/dev

In order to be in /mnt as root:

e) sudo chroot /mnt

Install Grub:

f) grub-install /dev/sda

exit

Now unmount all partitions you mounted before:

a) sudo umount /mnt/dev

b) sudo umount /mnt/boot

c) sudo umount /mnt/home

d) sudo umount /mnt

reboot your system:

sudo shutdown -r now

Now you select your ubuntu on the menu entry,
once in Ubuntu just perform this command:

sudo update-grub

OK!

[devils casper]

Best and easiest way to re-install GRUB2 using LiveCD is given here. Check details under title 13. Reinstalling GRUB 2 from LiveCD. Just mho !!

[oz]

Best and easiest way to re-install GRUB2 using LiveCD is given here.

That's a nice informative HowTo, and it appears that he's keeping it updated which is important considering all the changes that keep occurring with GRUB2.