Can't change partition table anymore

[Andrey Chernov]

On Sun, Apr 03, 2005 at 09:00:12PM -0700, Darren Pilgrim wrote:
> > I can't write FreeBSD bootloader because reinstalled Windows overwrite it 
> > with standard MBR and sysinstall don't allow to write bootloader anymore. 
> > The only thing I not try yet in that situation was 'dd' - I was too lasy 
> > to find needed byte.
> 
> The MBR is the first sector of the disk.  FWIW, if you're coexisting with
> Windows, it's easier to let Windows have its way with the MBR and use
> Windows' own boot loader.  The setup is simple, copy a boot sector and edit
> a text file, and Windows won't mess with it.

There are a lots of ways. When I don't know kern.geom.debugflags=16 trick 
yet, I istall 3rd party boot manager under Windows. But all this is not 
relevant to the discussed subject: why FreeBSD root can't change disk 
partition without quasi-shamanic dance with unnatural and undocumented 
sysctls? Why Linux root can do it freely?

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