From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1NfIse-0000Hu-Cc for garchives@archives.gentoo.org; Wed, 10 Feb 2010 20:09:48 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0BA61E0D27 for ; Wed, 10 Feb 2010 20:09:48 +0000 (UTC) Received: from email.aon.at (warsl404pip6.highway.telekom.at [195.3.96.89]) by pigeon.gentoo.org (Postfix) with ESMTP id 3E27AE0976 for ; Wed, 10 Feb 2010 19:43:01 +0000 (UTC) Received: (qmail 13371 invoked from network); 10 Feb 2010 19:42:59 -0000 X-Spam-Checker-Version: SpamAssassin 3.2.0 (2007-05-01) on WARSBL502.highway.telekom.at X-Spam-Level: Received: from 93-82-111-154.adsl.highway.telekom.at (HELO localhost) ([93.82.111.154]) (envelope-sender ) by smarthub93.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 10 Feb 2010 19:42:59 -0000 Date: Wed, 10 Feb 2010 20:43:44 +0100 (CET) Message-Id: <20100210.204344.00810518.joerg.faschingbauer@aon.at> To: gentoo-embedded@lists.gentoo.org, david.relson@orion-sys.com Subject: Re: [gentoo-embedded] USB Boot Problem From: joerg.faschingbauer@aon.at In-Reply-To: <91FA647A1A781F41BBB0359765C90C15F70A1A@mailsvr.orion-sys.com> References: <91FA647A1A781F41BBB0359765C90C15F70A1A@mailsvr.orion-sys.com> X-Mailer: Mew version 6.2 on Emacs 22.3 / Mule 5.0 (SAKAKI) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-embedded@lists.gentoo.org Reply-to: gentoo-embedded@lists.gentoo.org Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Archives-Salt: 808007b3-8046-4709-86fe-af72767e695a X-Archives-Hash: 9eeec6a3d3b5297c661d08bcd5f768af >>>>> "David" == Relson, David writes: David> When I boot with "linux root=/dev/sda1", I get the following David> VFS: Cannot open root device "sda1" or unknown-block(0,0) David> Please append a correct "root=" boot option; here are the available David> partitions: David> 0300 1000944 hda driver: ide-gd David> 0301 142096 hda1 David> 0302 856800 hda2 David> Kernel panic - not syncing: VFS: Unable to mount root fs on David> unknown-block(0,0) David> Evidently /dev/sda1 hasn't yet mounted. The boot process runs into the David> same problem when I use /dev/sda or /dev/sda2 for "root=". David> In the past I've seen similar kernel panics when the kernel lacks the David> proper disk driver. Since the system boots fine from the DOM, I believe David> my kernel has all the device drivers built in (except scsi_wait_scan.ko David> which is a module). David> How do I fix the boot problem? Anybody familiar with this problem and David> have a recommendation or, even better, a solution? You might want to pass "rootdelay=5" (seconds), or "rootwait" for newer kernels (don't know when the latter was introduced). Joerg