[olug] Ubuntu 10.4 boot question

[jesse]

I had a similar problem when i installed backtrack 4 which uses grub1
instead of grub2 and i wanted my mint grub2 bootloader back.  you can go
in live-cd in my case backtrack 4 worked.    find what partition ubuntu
is on /dev/sda(?) i use gparted but if you want a command you can type
sudo fdisk -l to display all your partitions and their size.  once you
find what partition it's on mount it to your mount directory 

sudo mount /dev/sda(?) /mnt
sudo mount /dev/sda(?) /mnt/boot
sudo mount --bind /dev /mnt/dev/
sudo chroot /mnt
grub-install /dev/sda
sudo umount /mnt/dev
sudo umount /mnt

and you should see grub come up again


On Mon, 2010-07-12 at 12:50 -0500, Kevin wrote:
> On linux, it's as simple as:
> dd if=/dev/hda of=/home/joe/boot.mbr bs=512 count=1
> 
> But that's if you haven't reinstalled windows already.
> 
> On Mon, Jul 12, 2010 at 12:34, Joe Gulizia <jrguliz at yahoo.com> wrote:
> > How do I find the MBR on Windows?
> >
> > Googling.....
> >
> > --- On Mon, 7/12/10, Jordan Fox <vmifox at gmail.com> wrote:
> >
> > From: Jordan Fox <vmifox at gmail.com>
> > Subject: Re: [olug] Ubuntu 10.4 boot question
> > To: "Omaha Linux User Group" <olug at olug.org>
> > Date: Monday, July 12, 2010, 11:20 AM
> >
> > yeah, he's telling you to do a backup of the partition and existing
> > MBR before overwriting it.  Always good advice so you can restore it
> > with a liveCD if something goes wrong.
> >
> > Jordan
> >
> > On Mon, Jul 12, 2010 at 11:06 AM, Joe Gulizia <jrguliz at yahoo.com> wrote:
> >> Yes boot is on a separate partition.  Do you mean before re-installing the boot partition?
> >>
> >> Joe
> >>
> >> --- On Mon, 7/12/10, Kevin <sharpestmarble at gmail.com> wrote:
> >>
> >> From: Kevin <sharpestmarble at gmail.com>
> >> Subject: Re: [olug] Ubuntu 10.4 boot question
> >> To: "Omaha Linux User Group" <olug at olug.org>
> >> Date: Monday, July 12, 2010, 7:57 AM
> >>
> >> Do you have /boot on a separate partition? If you do, then copy off
> >> the whole /boot partition using dd. Also make sure to copy off the
> >> MBR.
> >>
> >> On Mon, Jul 12, 2010 at 05:43, Joe Gulizia <jrguliz at yahoo.com> wrote:
> >>> I have an Ubuntu 10.4 live disk.  GRUB is not displaying on my machine, which was set up to dual boot.  I had to re-install Windows because it wasn't getting to a login prompt.
> >>> I have one drive that has Windows XP Pro (hda1 if  you will) -- the other drive has the whole Ubuntu 10.4 on it.  I have several partitions set up already.
> >>> Can I start and install and replace the / and boot partitions without loosing data OR should I boot into live mode and copy GRUB from the live disk?  If I do the latter, should I be looking in the /etc directory.
> >>> I definitely do not want to lose the data (/home) on my current system.
> >>> Thanks in advance.Joe
> >>> PS  I also have access to a couple versions of knoppix disks.
> >>>
> >>>
> >>>
> >>>
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