Restoring the MBR on a CD-ROM less Notebook

[Amichai Rotman]

Hey Tom,

Thank for the great info, except there isn't any Linux on it now. I need to
re-create Windows 7 boot loader or whatever.

I started a live Ubuntu 10.04 stick and I found out the partitin I need to
boot is /dev/sda2...

Thanks!

.:====================================================:.

Amichai Rotman

Registered Linux User#: 201192 [http://counter.li.org/]
Registered Ubuntu User #12851 [http://ubuntucounter.geekosophical.net]

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.:====================================================:.


On Wed, May 19, 2010 at 07:22, Tom H <tomh0665 at gmail.com> wrote:

> On Tue, May 18, 2010 at 3:37 PM, Amichai Rotman <amichai at iglu.org.il>
> wrote:
> > My sister bought a new Asus UL20A. I managed to convince her to give
> Ubuntu
> > a try (it came with Windows 7 pre-installed), So i installed 10.04 on it.
> > It has a single 320 Gb HDD, I was very careful not to wipe the recovery
> > partition, but I had to cut the original system partition (disk C:) into
> 2
> > partitions for Swap. so:
> > It had a Disk C: (I think about 80 Gb in size) and the rest as disk D:
> for
> > data.
> > I chose to manually partition the drive during the installation and
> deleted
> > the 80 Gb partition and created a 1024 MB for swap and the rest for /
> > (root), the rest - i didn't touch.
> > After installation, the last option in the GRUB menu was Windows Vista
> > (although it was actually Windows 7). I didn't give it much thought...
> > The deal was she tries Ubuntu for a week, then she decides if she wants
> to
> > keep it or go back to Windows 7. Regrettably - she chose the latter.She
> has
> > to go abroad for 3 months and she's affraid she will be stuck and no one
> > will know how to help her. She said she had nothing against Linux but...
> > I tried to launch the recovery process by pressing F9 during boot - but
> > nothing happened. I then tried to boot from that mysterious option on the
> > menu - an what da ya know ! it's the recovery process! So it went about
> > recovering - just as if I pressed F9 - and then told me the recovery was
> > done and I should click OK to shut down.
> > And here is the part I need help with: The next time I pressed the power
> > button - it says there is an error and gives me the "grub rescue>"
> prompt...
> > Please help me! There is no CD ROM drive, no recovery DVD media supplied
> (a
> > note that came with the computer says one is not supplied with this
> model).
> > How do I boot from USB stick and recover the Windows 7 MBR / Boot
> loader?!
> > All I have is my on Ubuntu Lucid on both my Desktop and my Netbook...
>
> At the grub rescue prompt:
>
> Run "ls" to display your disks and partitions
>
> Run "set" and check the values of "root" and "prefix"
>
> If "root" and "prefix" are incorrect (if you do not know what they
> should be, run "ls (hdX,Y)/boot" for the different values of X and Y
> since search isn't available in rescue mode), run
> set root=(hdX,Y)
> set prefix=(hdX,Y)/boot/grub
> to set them to the correct values
>
> Run
> insmod normal.mod
> or, if necessary,
> insmod /boot/grub/normal.mod
>
> Run
> linux /boot/vmlinuz-2.6.x.x root=/dev/sdXY ro
> initrd /boot/initrd.img-2.6.x.x
> boot
> (use tab completion)
>
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