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Date:      Tue, 8 Feb 2011 17:27:15 -0500
From:      "b. f." <bf1783@googlemail.com>
To:        Mario Lobo <lobo@bsd.com.br>
Cc:        freebsd-questions@FreeBSD.org
Subject:   Re: Accessing a GPT drive
Message-ID:  <AANLkTi=1YwragobZa71Vq5N_Ff+6MPemA15GR4s03HTS@mail.gmail.com>

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> Os: FreeBSD amd64 w/ options GEOM_PART_GPT

What version of FreeBSD?

> I added a drive to my system which I installed win7 64. The drive is 500G.
> I gave 100G to win7. Then I created an ext2 partition with the unallocated
> space with a gparted cd.
> fdisk shows the MBR of the drive with the win7 system and data partitions
> and the ext2 partition created.

This is a bit confusing.  You didn't tell us exactly what you did with
gparted (by the way, you should be able to do this with gpart(8) in
recent versions of FreeBSD), what version of fdisk you used, or what
MBR you are referring to here (maybe a protective MBR?),  since you
claim that Win7 only installs in a GPT scheme.  Are you sure about
that? Did you try to layout a disk first, and then install Win7 into
an existing partition?  I don't have a copy of Win7 to check this, but
I've seen other accounts that didn't mention this problem, e.g.,

http://bastian.rieck.ru/howtos/windows_boot_manager/
http://forums.freebsd.org/showthread.php?t=14222

But maybe you have an EFI-based system?

> I need to access both the NTFS win7 and ext2 partitions from freeBSD. FBSD
> "sees" the drive (ada2) but does not "see" the partitions. I need to access
> the ext2 partition
> from both FBSD and win7. I have another ext2 on the other drive that both
> OSs see fine but that drive
> has MBR scheme.  Win7 only installs in a GPT partition.

How exactly did you determine that FreeBSD doesn't "see" the
partitions? By using "gpart show"?

In the past, I've found:

http://www.rodsbooks.com/gdisk/

a useful source of information about using GPT with FreeBSD and Win*,
although some of the OS-specific material is dated.

b.



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