From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966767AbWKOKsX (ORCPT ); Wed, 15 Nov 2006 05:48:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966770AbWKOKsX (ORCPT ); Wed, 15 Nov 2006 05:48:23 -0500 Received: from server1.meinberg.de ([85.10.202.66]:3476 "EHLO paolo.meinberg.de") by vger.kernel.org with ESMTP id S966767AbWKOKsW (ORCPT ); Wed, 15 Nov 2006 05:48:22 -0500 Message-ID: <455AF068.5020700@meinberg.de> Date: Wed, 15 Nov 2006 11:48:08 +0100 From: Heiko Gerstung Organization: Meinberg Radio Clocks User-Agent: Thunderbird 1.5.0.7 (X11/20061108) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Initial ramdisk support does not work (for me) on 2.6.17.13 X-Enigmail-Version: 0.94.1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! We are building embedded devices based on Linux and we use a ramdisk as our root device in order to avoid problems with people switching off the unit without a proper shutdown and to save write-cycles on our flash disc. Using a 2.6.12 kernel it was no problem to boot the system by using this kernel parameters: load_ramdisk=1 console=tty0 initrd=initrd.gz rw vga=769 ramdisk_size=32768 root=/dev/ram0 Today I tried to test run a 2.6.17.12 kernel using the same parameters but I get this error message: VFS: Cannot open root device "ram0" or unknown-block(1,0) Please append a correct "root=" boot option The RAMDISK driver seems to be initialized correctly and the initrd image (gzipped ext2fs) contains a block device /dev/ram0 with major 1 and minor 0 ... Any hints what has changed and how I can get this kernel to use a ramdisk as its root device? Thanks in advance, best regards, Heiko -- ------------------------------------------------------------------------ *MEINBERG Funkuhren GmbH & Co. KG* Auf der Landwehr 22 D-31812 Bad Pyrmont, Germany Tel.: ++49 (0)5281 9309-25 Fax: ++49 (0)5281 9309-30 eMail: heiko.gerstung@meinberg.de Internet: www.meinberg.de ------------------------------------------------------------------------ Meinberg radio clocks: 25 years of accurate time worldwide