Re: Suse 9.1 keeps corrupting MBR for Windows (need help with GRUB)
From: David Efflandt (efflandt_at_xnet.com)
Date: 08/17/04
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Date: Tue, 17 Aug 2004 19:11:18 +0000 (UTC)
On 17 Aug 2004 09:33:21 -0700, Sz. Csetey <szcs@abuse.co.uk> wrote:
> Hello,
>
> Mark Burgo <mfburgo@atlanticbb.net> wrote in message
>> First, You should have searched google groups or the suse site. In version
>> 9.1 of suse ( actually it is a kernel 2.6 issue ) there was an issue with
>> repartitioning NTFS file systems.
>
> It's not NTFS related because sometimes it happens on FAT32 too and
> even if one used commercial partitioner before installation or a
> second disk. Parted corrupts the partition table on 2.6 kernels.
>
> SUSE fix:
> http://portal.suse.com/sdb/en/2004/05/fhassel_windows_not_booting91.html
If that is what I remember as changing something in CMOS setup, my BIOS
has no settings for DOS compatibility (LPA translation) or Unix (raw
heads/cyls). The partition table is what determines ide disk geometry and
partition layout, and Linux 2.6.x kernels (and 64-bit XP Pro beta) seem
to ignore partition table geometry. Although Linux fdisk shows correct
geometry.
> Parted fix:
> http://lists.gnu.org/archive/html/bug-parted/2004-08/msg00046.html
>
>> The problem you ran into has happened to
>> many and the Suse Support Database has a write up on the problem. The
>> actual issue is ( if I remember correctly ) the 2.6 kernel and versio of
>> parted with suse 9.1 reports the wrong fs type and sets it incorrectly on
>> the disk. This causes the partion to be un bootable via grub or lilo...
>
> Parted changes the geometry in the partition table therefore Windows
> can't boot anymore in some rare cases. Not even if it's reinstalled.
In my case I had just fixed the partition table when 64-bit XP Pro had
changed my heads from 240 to 255 and different cylinders (so it could not
even boot itself). So I recognized the incorrect cyls when installing
SuSE 9.1 and stopped it in its tracks (using existing partitions instead).
>> Second, If you ever need to get the windows MBR back boot into Windows from
>> the CD exit the install process and run fdisk /MBR. This rewrites the MBR
>> to the windows standard.
>
> Rewriting the MBR doesn't help because the problem is the corrupted
> partition table. But the above SUSE fix should work.
I put GRUB on a partition (marked as bootable) instead of the MBR, so I do
not have to worry about Windows tampering with the MBR.
-- David Efflandt - All spam ignored http://www.de-srv.com/
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