install/38841: installer blow up FreeBSD's disklabel on other DOS partitions

[matsunaw%ja2.so-net.ne.jp@localhost]

>Number:         38841
>Category:       install
>Synopsis:       installer blow up FreeBSD's disklabel on other DOS partitions
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    install-manager
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 03 07:40:00 +0000 2008
>Originator:     Hitoshi Matsunawa
>Release:        NetBSD 4.0
>Organization:
none
>Environment:
n/a
>Description:
Suppose I have 4 ``DOS'' partition where linux and freebsd-7.0
{i386|amd64} are installed already, then i tried to install NetBSD-4.0
{i386|amd64} in a free ``DOS'' partition using ISO images
(i386cd-4.0.iso and amd64cd-4.0.iso). After installer completed,
existed freebsd-7.0's disklabels, on different ``DOS'' partition from i
installed NetBSD-4.0, were blowed up (from my point of view).

>How-To-Repeat:
see description
>Fix:
I don't know it's a bug or feature. I think it shoud not re-write
other ``DOS'' partition's data without user's permission, or
documented loudly (sorry if i missed that part in ``install.txt'').