Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753434Ab0DTFR1 (ORCPT ); Tue, 20 Apr 2010 01:17:27 -0400 Received: from ksp.mff.cuni.cz ([195.113.26.206]:35219 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753278Ab0DTFR0 (ORCPT ); Tue, 20 Apr 2010 01:17:26 -0400 Date: Tue, 20 Apr 2010 07:17:16 +0200 From: Pavel Machek To: skitching@apache.org Cc: jkt@gentoo.org, linux-kernel@vger.kernel.org Subject: Re: boot device order troubleshooting without an initrd Message-ID: <20100420051716.GB2075@ucw.cz> References: <20100418165125.1d2b2843@infradead.org> <1271672423.005324.28333.nullmailer@xnet.co.nz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1271672423.005324.28333.nullmailer@xnet.co.nz> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1183 Lines: 28 On Mon 2010-04-19 22:20:23, skitching@apache.org wrote: > As it happens, I've been looking into this issue recently. > [Warning: kernel newbie speaking!] > > Without an initrd, the options for the root= kernel parameters are only those supported in init/do_mount.c: > 1. root=MAJOR:MINOR > 2. root=integer where integer is MAJOR< 3 root=/dev/xxx > (well, apart fron "mtd" and "ubi" options). And nfs? > Unfortunately, all of these options are sensitive to hardware changes, ie device enumeration order. So I > think that right now the answer to your question is: no, you can't get what you want without an initrd. > > And I doubt that changes to the linux device-enumeration code "to be consistent with the BIOS" would be accepted. > If it is clean enough... why not? -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/