Backup and Restor MBR

[kalinix]

On Sun, 2006-12-10 at 13:39 +0900, Hadders wrote:
> Vivek J. Patankar wrote:
> > On 12/10/06, Hadders <fedora at workingwithit.com> wrote:
> >> > # dd if=/dev/hda of=/path/filename bs=512 count=1
> >> I would assume I can just reverse the input file (if) and output file
> >> (of) statements to restore?
> >
> > I had used dd to take a backup of my FC5 setup before a "clean
> > install" upgrade to FC6. I took the MBR, / & /boot partitions. I left
> > /home intact. Fortnately FC6 didn't cause any problems, and I did not
> > have to restore. But I guess it should work. But a second opinion
> > about restore would be needed.
> > Alternatively, you can use the dd'ed MBR file to call grub from within
> > boot.ini of windows. I have done that before on dual boot systems
> > who's grub got overwritten. It's a less used alternative (provided you
> > have a backup of the MBR) to booting into rescue and doing a
> > grub-install.
> >
> I've been using the second method for some time now. It works okay, but 
> is restrictive as NTLoader is not very sophisticated.
> This can't be used with Vista, as Vista changes how it works.
> 
> Still, I did find that going back to Grub works fine, and you can boot, 
> XP, Vista and of course Linux.
> 
> I just wondered if 512bytes was enough to get the whole MBR? If it is, 
> then restore should work, no probs.
> 
> H
> 


http://www.google.ro/search?q=mbr
+size&start=0&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official


the first and the second result



Calin

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