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From: "Matthew T. Jachimstal" <matthew@uniqsys.com>
To: gentoo-dev@gentoo.org
Subject: Re: [gentoo-dev] question about grub
Date: 15 Mar 2002 13:03:16 -0500	[thread overview]
Message-ID: <1016215397.4355.49.camel@pinky.uniqsys.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0203151155340.6671-100000@rivendell.starshadow.com>

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On Fri, 2002-03-15 at 13:00, Ryan McLean wrote:
> Hello,
> 
>   I was reading your excellent installation documentation online, and I
> ran into a question.  Near the end you're breaking down the commands for
> grub, but you leave some information out that I would like to know:
> 
> # Below needed only for people who dual-boot
> title=Windows NT Workstation
> root (hd0,5)
> chainloader +1
> 
>   I'm unclear as to what the (hd0,5) are pointing to, is to say "boot of
> off the FAT partition located at partition 5"?  Normally MS likes to
> reside on the primary partition of the drive, so I just want clarification
> on this.  For instance, if I have a dual boot, MS on the primary partition
> and Gentoo's root at (sd0,3), then I would put root (sd0,1) under my
> Windows boot section, correct?  And also, what does the chainloader +1
> command do?  Thank you fo your time, I'm an old fan of lilo, but I have
> been cosidering migrating to a newer bootloader :)

I'll take a quick stab at this:

First, always add 1 to grub's numbers for disk and partition. The first
partition of the first disk is (hd0,0). So, if your Windows is on sda1,
the grub parameter is (sd0,0).

The chainloader +1 (I think) means to start chain loading the boot
loader 1 sector from the start of the specified (root) partition.

There's some excellent grub docs at the GNU website:
http://www.gnu.org/manual/grub-0.90/grub.html

I'd definitely encourage you to move to grub. Writing the boot sector
once really is much nicer. I messed up a config file, putting hd(0,0)
instead of (hd0,0). With LILO I would've needed to find a boot disc. In
grub, I simply edited the boot commands from the menu and merrily went
on with the boot.

Have fun!
Matthew

-- 
       Matthew T. Jachimstal        | Phone:  (419) 861-3331   .~.
       System Administrator         | FAX:  (419) 861-3340     /V\
        Unique Systems, Inc.        | http://www.uniqsys.com  // \\
6920 Spring Valley Drive, Suite 106 | matthew@uniqsys.com    /(   )\
         Holland, OH 43528          |                         ^`~'^

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  reply	other threads:[~2002-03-15 18:08 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-03-15 18:00 [gentoo-dev] question about grub Ryan McLean
2002-03-15 18:03 ` Matthew T. Jachimstal [this message]
2002-03-15 18:35 ` Dan Armak

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