From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39660) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VEQrW-0000yx-Aa for qemu-devel@nongnu.org; Tue, 27 Aug 2013 17:31:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VEQrN-0003xK-6q for qemu-devel@nongnu.org; Tue, 27 Aug 2013 17:31:42 -0400 Received: from mail-ee0-x22f.google.com ([2a00:1450:4013:c00::22f]:51983) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VEQrN-0003wv-19 for qemu-devel@nongnu.org; Tue, 27 Aug 2013 17:31:33 -0400 Received: by mail-ee0-f47.google.com with SMTP id d49so2510791eek.6 for ; Tue, 27 Aug 2013 14:31:32 -0700 (PDT) Sender: Paolo Bonzini Message-ID: <521D1AB0.1070904@redhat.com> Date: Tue, 27 Aug 2013 23:31:28 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <586568842.455717.1377510746935.open-xchange@email.1und1.de> <20130827073833.GB24247@stefanha-thinkpad.redhat.com> <521D0B84.8040301@rdsoftware.de> In-Reply-To: <521D0B84.8040301@rdsoftware.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Boot Problems Windows XP guest List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Erik Rull Cc: Stefan Hajnoczi , "qemu-devel@nongnu.org" Il 27/08/2013 22:26, Erik Rull ha scritto: > Hi Stefan, > > which BIOS is selected by default? QEMU only ships with SeaBIOS. > It's more a guess, there must be a > change between 1.2.0 and 1.6.0 that prevents a simple Windows XP from > booting completely, if the guest HDD image is placed on a SSD. On a > rotating HDD (with the same commandline except the path to the image) it > boots successfully. The only difference is the speed of the disk access. It could be a real difference, actually. An unexpectedly fast disk might screw a sloppy driver. IIRC you're not the first person reporting it. Stefan, do you think using block throttling could fix it (with some trial and error)? > I will try an alternative BIOS, maybe this fixes it, if not I will try > to do some regression tests, first trying 1.4.0. This could help. Paolo