From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1K1M6n-0006ug-RV for mharc-grub-devel@gnu.org; Wed, 28 May 2008 09:54:29 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1K1M6m-0006uJ-92 for grub-devel@gnu.org; Wed, 28 May 2008 09:54:28 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1K1M6k-0006tt-RJ for grub-devel@gnu.org; Wed, 28 May 2008 09:54:27 -0400 Received: from [199.232.76.173] (port=40359 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1K1M6k-0006tq-Mz for grub-devel@gnu.org; Wed, 28 May 2008 09:54:26 -0400 Received: from aybabtu.com ([69.60.117.155]:57688) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1K1M6k-0008LS-NL for grub-devel@gnu.org; Wed, 28 May 2008 09:54:26 -0400 Received: from [192.168.10.10] (helo=thorin) by aybabtu.com with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.63) (envelope-from ) id 1K1M6S-0006oX-8D for grub-devel@gnu.org; Wed, 28 May 2008 15:54:11 +0200 Received: from rmh by thorin with local (Exim 4.63) (envelope-from ) id 1K1M6M-00076q-0r for grub-devel@gnu.org; Wed, 28 May 2008 15:54:02 +0200 Date: Wed, 28 May 2008 15:54:02 +0200 From: Robert Millan To: The development of GRUB 2 Message-ID: <20080528135402.GE26495@thorin> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Organization: free as in freedom X-Message-Flag: Worried about Outlook viruses? Switch to Thunderbird! www.mozilla.com/thunderbird X-Debbugs-No-Ack: true User-Agent: Mutt/1.5.13 (2006-08-11) X-detected-kernel: by monty-python.gnu.org: Genre and OS details not recognized. Subject: Re: [PATCH] Scan root device dynamically at startup X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 May 2008 13:54:28 -0000 On Tue, May 20, 2008 at 06:22:25PM +0800, Bean wrote: > Hi, > > For normal boot, the root device is passed to core.img in preloader. > However, if we load grub2 using linux header, there is no way to know > the root device. This patch add a new module findroot that can be used > to scan the root directory at startup. > > One important usage is to create a grub2 boot file for vista boot loader: > > mkimage -o g2ntfs.img pc ntfs biosdisk findroot > cat lnxboot.img g2ntfs.img > g2ntfs.mbr > > The result g2ntfs.mbr is within 32K, which can be loaded by vista in > one pass, no need to use the g2ldr.mbr anymore. The findroot modules > ensure that prefix is set properly before switching to normal mode. > > If findroot is not used to create core.img, the original booting method remains. The module is called findroot, but it initialises $prefix rather than $root. Shouldn't it be findprefix or so? Also, what this module is doing looks very similar to "search --set". Did you check if search command can be used for what you want? (or otherwise adapted) -- Robert Millan I know my rights; I want my phone call! What good is a phone call… if you are unable to speak? (as seen on /.)