Question about reinstalling GRUB

[Jkhatri]

On 05/24/2012 08:44 AM, Bill Stanley wrote:
> I have an older (but still good) computer that dual boots Ubuntu and 
> Windows.  The Windows partition needs the Windows OS to be reinstalled.
>
after installing windows, boot using live cd ( ubuntu )

1] select " try without any change to your computer"
2] once you have login start the terminal
3] change to root using " sudo -i" ( prompt will be changed to 
root at ubuntu:~# )

4] find partition location of your ubuntu:-

root at ubuntu:~# fdisk -l
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x10031003

Device Boot Start End Blocks Id System
/dev/sda1 * 1 6374 51199123+ 7 HPFS/NTFS
/dev/sda2 6375 19457 105089197+ f W95 Ext'd (LBA)
/dev/sda5 6375 11473 40957686 7 HPFS/NTFS
*/dev/sda6* 11474 19457 64131448+ 83 Linux<--- Here

5] Create mount-point for ubuntu's partition

root at ubuntu:~# mkdir /media/root

6] mount the partition using following line/command
root at ubuntu:~# mount */dev/sda6* /media/root

7] confirm your root location by typing "ls /media/root"
root at ubuntu:~# ls /media/root
bin dev initrd.img lib32 media proc selinux tmp vmlinuz
boot etc initrd.img.old lib64 mnt root srv usr vmlinuz.old
cdrom home lib lost+found opt sbin sys var

8] if the output of the above command looks similar to the above result 
we can now install GRUB2

root at ubuntu:~# sudo grub-install --root-directory=/media/root /dev/sda

You may see -----> "Installation finished. No error reported. This is 
the contents of the device map
/media/root/boot/grub/device.map. Check if this is correct or not. If 
any of the lines is
incorrect, fix it and re-run the script `grub-install'. (hd0) /dev/sda"

9] reboot your system !!!

10] No windows entry in grub menu ??

11] boot to your ubuntu

12] start terminal run " update grub2 "

user1 at linbox:~$ sudo update-grub2
[sudo] password for ubuntu:
Generating grub.cfg ...
Found Debian background: apollo.tga
Found linux image: /boot/vmlinuz-2.6.31-15-generic
Found initrd image: /boot/initrd.img-2.6.31-15-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done

  13] again reboot .....  you should be able to see windows at grub menu 
!!!!!!!!!!!!!!!!


Warm Regards
-- 

*/

Jatin Khatri

RHCSA RHCE CCNA

www.fedoraproject.org/wiki/Jatin <http://www.fedoraproject.org/wiki/Jatin>

Phone (+91) 98250 20393

Save Paper, Save Environment.**
/*(Plant at least one tree in your life and nurture it !!!)*/


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