Re: [SOLVED] Re: [gentoo-user] selecting boot(active?) partition

["pat" <pat@xvalheru.org>]

On Tue, 10 Jul 2007 17:34:28 -0500, Dan Farrell wrote
> On Tue, 10 Jul 2007 11:09:07 +0200
> "pat" <pat@xvalheru.org> wrote:
> > Some information what I've used to remove GRUB from MBR. In windows
> > (don't beat me) there are tools 'fixmbr' and 'fixboot' and Ive used
> > them.
> You could try 'fdisk /mbr' from windows command line.  That should
> replace your MBR with one which simply passess boot process off to
> the active partition, which is -- i believe -- how windows does it.  
> But, read on.
> 
> > Probably last question: When I've tried to set the recovery partition
> > 'active' in fdisk, the system still boots from the GRUB and not from
> > the 'active' partition ... I think I've did it wrong, did I?
> 
> The boot process from a hard drive looks something like
> Power button -> BIOS -> mbr boot -> partition boot -> OS init.
> 
> chances are that GRUB is on the mbr so the recovery partition's boot
> record is never used.  Have you considered using GRUB to boot the
> partition like you would a windows partition?  that would look
> something like 

Yes, I've booted recovery partition from the GRUB (using cfg below), but the
recovery process replace whole disk with one big windows partition, so the
GRUB "configuration" partition (partition with /boot/grub/grub.cfg) is removed
and it doesn't update MBR to boot from active partition ... .

Thanks.

> | # boot this partition's boot record
> | rootnoverify (hd0,2) # corresponds to 1st hard drive ,3rd 
> partition. |	       # set to your recovery partition instead. | makeactive
> | chainloader  +1
> that, I think, will do about the same thing as 'fdisk /mbr' from
> windoze but avoids the hosing of GRUB, which is actually a 
> wonderfully flexible and useful bootloader compared to the 'active partition'
> scheme of windoze.  

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