From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: Failure to boot CDROM with -drive arg Date: Tue, 08 Jul 2008 09:59:39 -0500 Message-ID: <487380DB.5080108@codemonkey.ws> References: <20080708083730.GC24934@redhat.com> <20080708091724.GA4861@ralph.linux2go.dk> <20080708092149.GF24934@redhat.com> <4873653B.3000103@codemonkey.ws> <1215524729.3805.21.camel@frecb07144> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: "Daniel P. Berrange" , kvm@vger.kernel.org To: Laurent Vivier Return-path: Received: from el-out-1112.google.com ([209.85.162.176]:46011 "EHLO el-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751530AbYGHPAG (ORCPT ); Tue, 8 Jul 2008 11:00:06 -0400 Received: by el-out-1112.google.com with SMTP id z25so296268ele.1 for ; Tue, 08 Jul 2008 08:00:05 -0700 (PDT) In-Reply-To: <1215524729.3805.21.camel@frecb07144> Sender: kvm-owner@vger.kernel.org List-ID: Laurent Vivier wrote: > So, "boot=on" means in fact "bootable=true" > I guess. I don't know that the later is more clear. I think the source of the confusion is the entire concept of "first bootable harddisk" which is what -boot c really means. FWIW, the reason media=cdrom,boot=on doesn't work, is that a CDROM's boot record is in el torito format instead of the traditional BIOS boot sector. media=cdrom,boot=on would work if the image was a disk image instead of an ISO. In fact, I'm inclined to think that media=cdrom,boot=on should not be explicitly prohibited because of this fact. Regards, Anthony Liguori > Regards, > Laurent >