Booting FreeBSD-5.3 from NTLDR
Loren M. Lang
lorenl at alzatex.com
Mon Jan 31 02:11:57 PST 2005
On Mon, Jan 31, 2005 at 11:59:11AM +0400, Rakhesh Sasidharan wrote:
> > No, boot0 is just a normal file that is 512 bytes long. There is
> > nothing special about it. In it is a bootloader program that can be
> > used to boot FreeBSD, and if you run it during boot, it will read the
> > partition table and look for all OSes. I think it will modify the
> > partition table, though, marking the last OS you booted into, but that's
> > the program running doing that, the file itself is harmless.
>
> Ok. I must have used some other command then, which resulted in my
> first disk MBR getting over-written ... strange. :-/
>
> By the way, does the fact that NTLDR is on my first disk, while
> FreeBSD (and hence its MBR boot0) is on my second disk complicate
> matters? I mean, you mention boot0 will modify my partition table to
> reflect which OS was booted last -- will it by any chance modify the
> partition table on the first disk and hence mess it?
>
You can disable this behavior of boot0 when you install the MBR on the
second disk using the "-o noupdate" argument to boot0cfg.
>
> --
> Rakhesh
> rax at rakhesh.com
--
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