Try Parted Magic. It is the tool most used by Linux forensic shops.
http://partedmagic.com
I believe that Partition Editor or Gparted can do it as well, but you
cannot work on a partition that is mounted. It is best to work from a Live
CD.
Roy
Using Kubuntu 12.10, 64-bit
Location: Canada
On 29 October 2012 11:03, Pascal <
pascal.bernhard@belug.de> wrote:
> **
>
>
>
>
> --- In
LINUX_Newbies@yahoogroups.com, Roy <linuxcanuck@...> wrote:
> >
> > You can rewrite grub using the Kubuntu Live CD or any other one.
> >
> > Got to
https://help.ubuntu.com/community/Grub2/Installing
> > see the section: Reinstalling GRUB 2 from a Working System
> >
> > It is rather simple really. You just open a terminal and copy and paste
> the
> > line that looks like: sudo grub-install /dev/sda
> >
> > It should detect any installed OS and give it a grub entry.
>
> Exactly that is the point, GRUB does not detect any OS on this partition
> and I'm told that the file system is not valid (After shrinking only the
> file system and not yet the partition, I was able to boot into Windows). I
> believe there is a problem with the partition. It starts at sector 2048
> (That's what fdisk set it to when creating a new partition, no smaller
> value possible via this tool). I installed several GRUBs (GRUB legacy &
> GRUB 2), they all failed to recognize Windows.
>
> Does anyone know of a Linux partitioning tool where you can set the
> beginning of a new partition at sector 64? That's the starting point of a
> NTFS-formatted USB drive, and I suspect, that is where the Windows
> partition should actually start for GRUB to detect a Windows operating
> system.
>
> In the meantime, I guess I will install Windows 7 on another computer
>
> Thanks for your help,
>
> Pascal
>
> >
> > > **
>
> > >
> > >
> > > Do you have a Windows CD to boot from? Do you know the Admin Password?
> For
> > > WinXP, I've used Fixboot and FixMBR, then later I've used the Grub Disk
>
> > > Repair CD. I hope you remembered to run Defrag on the Windows hard
> drive
> > > before resizing its partition.
> > >
> > > Excuse if I left out any steps, but others have no doubt run into this
> > > more than I have.
> > >
> > > Joan in Reno
> > >
> > > --- On Sun, 10/28/12, Pascal <pascal.bernhard@...> wrote:
> > >
> > > From: Pascal <pascal.bernhard@...>
> > > Subject: [LINUX_Newbies] Recover Windows Partition_GRUB does not
> recognize
> > > Windows partition
> > > To:
LINUX_Newbies@yahoogroups.com
> > > Date: Sunday, October 28, 2012, 4:48 PM
>
> > >
> > >
> > >
> > > I wanted to shrink a Windows-XP partition under a dual boot setup
> (Kubuntu
> > > 12.10), in order to install a different Linux and have more space for
> it on
> > > the harddrive. So I resized it via ntfsresize -b -s 60GB (original
> size was
> > > 90GB). Kubuntu's GRUB booted Windows correctly. Then I deleted the
> > > NTFS-partition with fdisk and recreated in its place a smaller one
> (size
> > > 61GB, a little bigger than the newly shrunk file system).
> Unfortunately I
> > > did not pay attention to the starting point of the original Windows
> > > partition, and had it start on the default value fdisk assumes, that is
> > > 2048.
> > >
> > > All of a sudden, Kubuntu's GRUB told me that no partition was found, I
> had
> > > deleted the Linux partitions behind Windows in the meantime, as
> Siduction's
> > > installer (I did not want Ubuntu stuff anymore) does not feature a
> working,
> > > easy to use partioning tool like gparted. Somehow the installed GRUB
> barely
> > > understood (that is, it understood some but not all) GRUB2 and GRUB
> > > commands when it dropped to grub shell on bootup. It saw the
> > > NTFS-partition, but I could not make it boot it.
> > >
> > > ls & set root=(hdX,Y) worked
> > >
> > > drivemap -s (hd0) ${root} didn't
> > >
> > > so I was stuck
> > >
> > > Then I installed Siduction and Fuduntu on the free disk space. Both
> > > installed their respective GRUB into the MBR of the partition, but
> neither
> > > of them detected a Windows OS. Right now I can choose between
> Siduction and
> > > Fuduntu. The command os-prober wasn't successful either. I cannot mount
> > > (Running Fuduntu or Siduction) the partition (/dev/sda1), for I'm told,
> > > that it doesn't contain a valid NTFS file system.
> > >
> > > Does somebody know how to fix that? Do I have to reinstall Windows?
> > >
> > > Pascal
> > >
> > > [Non-text portions of this message have been removed]
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
[Non-text portions of this message have been removed]
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