windows overwrote boot record

Robert Costa zabbarob at googlemail.com
Thu Aug 21 23:29:07 UTC 2008


try just giving the hard disk as device, not the partition (sda
instead of sda5). hope that works, i'm not sure:

sudo grub-install --root-directory=/media /dev/sda

bye,
robert.

2008/8/22 Juan Kawada <juankawada at gmail.com>:
> ubuntu at ubuntu:~$ sudo fdisk -l
> omitting empty partition (5)
>
> Disk /dev/sda: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x724bd9dc
>
>   Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1        6869    55175211    7  HPFS/NTFS
> /dev/sda2            6870       11778    39431542+   7  HPFS/NTFS
> /dev/sda3           11779       38913   217961887+   5  Extended
> /dev/sda4           38162       38913     6040408+  82  Linux swap / Solaris
> /dev/sda5           11779       38161   211921384+  83  Linux
>
>
> ok. I also tried this:
> ubuntu at ubuntu:~$ sudo mount /dev/sda6 /media
> mount: special device /dev/sda6 does not exist
> ubuntu at ubuntu:~$ sudo mount /dev/sda5 /media
> ubuntu at ubuntu:~$ sudo grub-install --root-directory=/media /dev/sda5
> The file /media/boot/grub/stage1 not read correctly.
>
>
>
> On 8/21/08, Karl Klinger <karlok at fastmail.fm> wrote:
>> Juan Kawada wrote:
>>> would hd0 be my boot partition?  sorry I have no idea what i'm doing
>>> really. How do I know what my boot/root partitions are?
>>>
>>>
>>> On 8/21/08, Willy K. Hamra <w.hamra1987 at gmail.com> wrote:
>>>> Juan Kawada wrote:
>>>>> I just had to reinstall windows, and it overwrote the boot record, I
>>>>> now boot to a screen that says
>>>>>
>>>>> windows xp home edition
>>>>> windows xp professional
>>>>>
>>>>> I got into a live cd and tried this:
>>>>> sudo grub
>>>>> find /boot/grub/stage1
>>>>> root (hd0,5)
>>>>> setup (hd0)
>>>>>
>>>>> and got:
>>>>> grub> find /boot/grub/stage1
>>>>>  (hd0,5)
>>>>>
>>>>> grub> root (hd0,5)
>>>>>
>>>>> grub> setup (hd0)
>>>>>  Checking if "/boot/grub/stage1" exists... yes
>>>>>  Checking if "/boot/grub/stage2" exists... yes
>>>>>  Checking if "/boot/grub/e2fs_stage1_5" exists... yes
>>>>>  Running "embed /boot/grub/e2fs_stage1_5 (hd0)"...  16 sectors are
>>>>> embedded.
>>>>> succeeded
>>>>>  Running "install /boot/grub/stage1 (hd0) (hd0)1+16 p
>>>>> (hd0,5)/boot/grub/stage2
>>>>> /boot/grub/menu.lst"... failed
>>>>>
>>>>> Error 22: No such partition
>>>>>
>>>>>
>>>>> What's wrong?  I've also tried setup (hd0,5) with similar results.
>>>>>
>>>>> Is this because I'm using i'm using the 7.10 live cd on an 8.04
>>>>> install? I'm not sure where my 8.04 disc went.
>>>>>
>>>> i don't think it matters, grub is the same for all versions and distros
>>>> AFAIK.
>>>> i'm sorry i can't be of much help, since i never used that command, when
>>>> i do any reinstall/repair of windows, and the MBR gets overwritten, i
>>>> boot the LiveCD-any *buntu LiveCD-and do the following
>>>> mount my partition, if you have more than 1 partition, you need to mount
>>>> the root partition and the boot partition, keeping their original
>>>> directory tree, for example, if you mounted the root partition under
>>>> /media , you should mount the boot partition under /media/boot .
>>>> and then i issue the following command:
>>>>
>>>> sudo grub-install --root-directory={mount directory} /dev/{the device}
>>>>
>>>> mount directory=the directory you mounted your root partition at
>>>> the device=the hard disk device you want to install grub on
>>>>
>>>> hope this works
>>>>
>>>> --
>>>> Willy K. Hamra
>>>> Manager of Hamra Information Systems
>>>> Co. Manager of Zeina Computer & Billy Net
>>>>
>>>
>>>
>>  From your grub output it looks like your root partition is sda6 and you
>> don't have a separate boot partition.  Thus you could:
>>
>> sudo mount /dev/sda6 /media
>>
>> At this point you could do an 'ls /media' to make sure that it contains
>> the linux directory tree.  If all is well, do:
>>
>> sudo grub-install --root-directory=/media /dev/sda6
>>
>> Karl
>>
>> p.s. I noticed on another thread that you had recently installed a
>> second dvd drive.  I wonder if this could have confused grub and caused
>> it to fail.
>>
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>
>
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