From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161215AbWALTrD (ORCPT ); Thu, 12 Jan 2006 14:47:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161216AbWALTrB (ORCPT ); Thu, 12 Jan 2006 14:47:01 -0500 Received: from zproxy.gmail.com ([64.233.162.200]:985 "EHLO zproxy.gmail.com") by vger.kernel.org with ESMTP id S1161215AbWALTrA convert rfc822-to-8bit (ORCPT ); Thu, 12 Jan 2006 14:47:00 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=IUZhCFJ32fPcDedUdsQr5O4vxns0LMbwdiuxQrU0z04dqMMBLGQnME4Iovvh98VluUy1lrzzHHnYSmxTOLLLmWNqWsXN9bSUiAlRNum+7Sv3Wq+2MHjgiIRL1khpp+EIPyY6BoxkDc9dqfVEGO3l6afX04fLDIwfEXmRXH+W2FI= Message-ID: <9a8748490601121146g780cc826pcabd4215658376be@mail.gmail.com> Date: Thu, 12 Jan 2006 20:46:59 +0100 From: Jesper Juhl To: "Brian D. McGrew" Subject: Re: Capturing All Kernel Messages Cc: linux-kernel@vger.kernel.org In-Reply-To: <14CFC56C96D8554AA0B8969DB825FEA0970971@chicken.machinevisionproducts.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <14CFC56C96D8554AA0B8969DB825FEA0970971@chicken.machinevisionproducts.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 1/12/06, Brian D. McGrew wrote: > So I'm trying to build a new special kernel and of course, as Murphy > says, it'll blow up the first 1,000 times! I need to capture the boot > messages because I'm getting a lot of errors scrolling by before the > kernel panics and I'm toast and have to revert back to my old kernel. > Once I revert back to my old kernel, all my previous messages are lost > and dmesg does me no good! > > How can I make the kernel output to a file or some other means as soon > as it starts loading so I can capture this stuff? > serial console, net console or console on line printer. Check the Documentation/ subdir in the kernel source for the details. -- Jesper Juhl Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html