[bug #17472] grub install on hd(0, 0) permanently damages Windows bootloader

[Thomas K.]

URL:
  <http://savannah.gnu.org/bugs/?17472>

                 Summary: grub install on hd(0,0) permanently damages Windows
bootloader
                 Project: GNU GRUB
            Submitted by: katzlbt
            Submitted on: Samstag 19.08.2006 um 07:40
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Thomas
        Originator Email: 
             Open/Closed: Open
                 Release: 0.97-15
         Reproducibility: Every Time
         Planned Release: 

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Details:


I have reproduced the behavior described in this article:
http://www.driverheaven.net/archive/index.php/t-36120.html

I made the mistake of installing GRUB in the boot sector of my Windows
partition (C: grub-install /dev/hda1 or hd(0,0) -- can't remember exactly).
At first, when trying to load Windows, GRUB would chainload GRUB. So I tried
to reinstall the Windows boot system from the recovery console:

fixboot c:

--- BOOTING ---
rootnoverify hd(0,0)
chainloader +1

Disk Error.
Press any key to restart the system.
(this instantly reads GRUB again)

dosfsck reported mismatches in the bootsectors of hda1, so I replaced the
originals with the backup ... but that showed no effect.

Mabe GRUB should at least show a warning that this may break Windows
permanently.

References:
http://www.driverheaven.net/archive/index.php/t-36120.html







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