From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:49747) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RjSAl-0001jZ-MV for qemu-devel@nongnu.org; Sat, 07 Jan 2012 04:02:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RjSAk-00074c-CJ for qemu-devel@nongnu.org; Sat, 07 Jan 2012 04:02:43 -0500 Received: from chello084112167138.7.11.vie.surfer.at ([84.112.167.138]:51899 helo=wiesinger.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RjSAk-00074W-0N for qemu-devel@nongnu.org; Sat, 07 Jan 2012 04:02:42 -0500 Date: Sat, 7 Jan 2012 10:00:56 +0100 (CET) From: Gerhard Wiesinger In-Reply-To: <20120107015302.GA10181@morn.localdomain> Message-ID: References: <4F055827.50202@redhat.com> <20120105083239.GR2072@redhat.com> <20120105092037.GA31206@redhat.com> <20120106020539.GB25140@morn.localdomain> <20120106052725.GA3105@redhat.com> <20120107015302.GA10181@morn.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Subject: Re: [Qemu-devel] Boot order problem and disable iPXE/gPXE List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kevin O'Connor Cc: Gerd Hoffmann , Gleb Natapov , qemu-devel@nongnu.org On Fri, 6 Jan 2012, Kevin O'Connor wrote: > I'm not sure what a SCSI rom would do with a CD drive. My guess is > that it wouldn't map it to a BIOS visible drive id at all, as there's > no way to select an id with any assurance that it wont conflict with > one chosen by the BIOS or another rom. If QEMU can simulate this (and > someone knows the command-line to do such) it would be an interesting > test to see what the rom does. As far as I remember from SCSI only systems one can just boot from CD drives, too. Order is SCSI id (starting with SCSI id 0, up to 7, 15, etc. depending on host adapeter). Tried: -drive file=KNOPPIX_V6.2CD-2009-11-18-DE.iso,media=cdrom,if=scsi,bus=0,unit=0 all other drives are afterwards. Registers as CDROM, selecting Legacy Option ROM from boot menu, but can't boot: Screen: Booting from DVD/CD... Boot failed: Could not read from CDROM (code 0003) Log: Booting from DVD/CD... scsi_is_ready (drive=0x000fd920) ata_pio_transfer id=0x000fd920 write=0 count=1 bs=18 buf=0x00006746 Read sector id=0x000fd920 dest=0x00006746 Device reports MEDIUM NOT PRESENT scsi_is_ready returned -1 Boot failed: Could not read from CDROM (code 0003) Ciao, Gerhard -- http://www.wiesinger.com/