In message: <20050404042817.GB49953_at_nagual.pp.ru> Andrey Chernov <ache_at_nagual.pp.ru> writes: : 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? As you see in my other mail, this only happens when one partition overlaps the MBR and that partition has mounted partitions. Such a configuration is illegal, but tolerated, in the PC world. WarnerReceived on Mon Apr 04 2005 - 03:08:24 UTC
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