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

From: sburtchin
Subject: Re: [bug #17472] grub install on hd(0, 0) permanently damages Windows bootloader
Date: Sat, 20 Jan 2007 03:23:14 -0800 (PST)

FAT32 partitions always have a copy of the boot sector offset 6 sectors from
the real boot sector.

NTFS partitions have a copy in the very last sector of the partition (I
think the older NTFS used by WindowsNT put this copy at the center of the

FAT16 partitions do not have a copy, but you can generate a usable boot
sector by creating another partition with exactly the same geometry (same
number of total sectors) and formatting it as FAT16 (force same allocation
unit size if necessary).

The easiest tool for copying sectors around is MBRWORK.  You can use PTEDIT
to quickly find out where these sectors are at.  Both run from a DOS boot
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