From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1NxOh8-0004Xi-Vm for mharc-grub-devel@gnu.org; Thu, 01 Apr 2010 14:00:42 -0400 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NxOh7-0004XZ-Qk for grub-devel@gnu.org; Thu, 01 Apr 2010 14:00:41 -0400 Received: from [140.186.70.92] (port=60102 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NxOh4-0004XC-BI for grub-devel@gnu.org; Thu, 01 Apr 2010 14:00:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1NxOh2-0005V6-Ux for grub-devel@gnu.org; Thu, 01 Apr 2010 14:00:38 -0400 Received: from mail.gmx.net ([213.165.64.20]:55710) by eggs.gnu.org with smtp (Exim 4.69) (envelope-from ) id 1NxOh2-0005Uk-Hn for grub-devel@gnu.org; Thu, 01 Apr 2010 14:00:36 -0400 Received: (qmail invoked by alias); 01 Apr 2010 18:00:35 -0000 Received: from 165.126.46.212.adsl.ncore.de (HELO 192.168.2.69) [212.46.126.165] by mail.gmx.net (mp052) with SMTP; 01 Apr 2010 20:00:35 +0200 X-Authenticated: #2145628 X-Provags-ID: V01U2FsdGVkX1+S/bYNPjaShdFMVq4W5HEr6g+wPe07vN0Pv60PKO v6a7x3MvfS3iGk Date: Thu, 01 Apr 2010 19:59:47 +0200 From: "Thomas Schmitt" To: grub-devel@gnu.org References: <4BB4D0DD.3070106@gmail.com> In-Reply-To: <4BB4D0DD.3070106@gmail.com> Message-Id: <105814123160@192.168.2.69> X-Y-GMX-Trusted: 0 X-FuHaFi: 0.56999999999999995 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. Subject: How to prepare an ISO 9660 CD for booting via GRUB ? X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Apr 2010 18:00:42 -0000 Hi, > Your question is how to make a cd with grub on it ? Yes. GNU xorriso is like cdrtools + growisofs in one single binary. My question about GRUB on CD shall improve the mkisofs-like aspect of xorriso. I am able to influence ISO image production in any detail. But i need instructions how to prepare it so that a PC BIOS starts GRUB correctly. I expect a BIOS to ignore the first 16 blocks of a CD unless an El Torito record points to an address in there. Robert Millan's example > > cat boot.img core.img> tmp > > mkisofs --embedded-boot tmp -o grub.iso -r somedir places GRUB files into those 16 blocks. But it does not produce an El Torito record when run with his latest mkisofs and a dummy file "tmp". So either his mkisofs wants to see real GRUB files or my theory about BIOS + CD + GRUB is wrong. > menuentry "ISO Live - Ubuntu 9.10 Karmic AMD64" { > insmod loopback > insmod iso9660 > set isofile="/iso/lucid-desktop-amd64.iso" Interesting example. It is astounding what one can do with a bootloader nowadays. It would be in my current focus of interest, if that ISO image itself is equipped with GRUB and boots from real CD. In that case i would like to know an URL for downloading it. Have a nice day :) Thomas