Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754639AbXICNES (ORCPT ); Mon, 3 Sep 2007 09:04:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752586AbXICNEH (ORCPT ); Mon, 3 Sep 2007 09:04:07 -0400 Received: from ug-out-1314.google.com ([66.249.92.168]:62621 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752265AbXICNEF (ORCPT ); Mon, 3 Sep 2007 09:04:05 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=lH1yBrcrJW1EPqYWK12+FirgzYjq/Qx+3y+Cdu/JXpNXc2l+VbMWCqSUOaTr+lzpW6K4V1ewqrZBAIIYfhcIaWiOf3Pv+A/F2ADQl5MF/ERB3Kshh1TIAnp9RYtOWVotFdWkUVZ+RmdBOM9Gg6K0nrrh4+Qifh1d/LLth30foB4= Message-ID: Date: Mon, 3 Sep 2007 15:04:04 +0200 From: "Xu Yang" To: LKML Subject: ramdisk MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1897 Lines: 69 Hi everyone, I want to use ramdisk to boot my filesystem, as I can't use NFS and harddisk. I have load the ramdisk into the ram memory (start address :0x4000000) and in the boot options I specified : root =dev/ram0 initrd=0x4000000 but the kernel said it can not find any file system on it. Here is the information I can supply : U-Boot 1.2.0 (Aug 31 2007 - 20:54:55) *** Auto-detects ethernet chip *** DRAM: 0 kB ## Unknown FLASH on Bank 1 - Size = 0x00000000 = 0 MB Flash: 0 kB *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 ## Booting image at 00007fc0 ... Image Name: Linux-2.6.19-arm2 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 740372 Bytes = 723 kB Load Address: 00008000 Entry Point: 00008000 OK ## Loading Ramdisk Image at 04000000 ... Image Name: ramdisc Image Type: ARM Linux RAMDisk Image (gzip compressed) Data Size: 12582962 Bytes = 12 MB Load Address: 04000000 Entry Point: 04000000 Starting kernel ... ......................................................................................... RAMDISK driver initialized: 16 RAM disks of 10240K size 1024 blocksize <6>loop: loaded (max 8 devices) <6>mice: PS/2 mouse device common for all mice <6>VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 3 No filesystem could mount root, tried: ext2 cramfs vfat <0>Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Who can give me some hints ? or point me some direction to handle this. I appreciate this very much. regards, Yang - 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/