From: Martin Wilck Subject: Re: GRUB and the risk of block list corruption in extX Date: Fri, 08 Feb 2013 11:15:22 +0100 Message-ID: <5114D03A.6000700@ts.fujitsu.com> References: <51137F76.8070705@ts.fujitsu.com> <20130207205335.GA28084@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: "linux-ext4@vger.kernel.org" To: Theodore Ts'o Return-path: Received: from dgate10.ts.fujitsu.com ([80.70.172.49]:54277 "EHLO dgate10.ts.fujitsu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760070Ab3BHKPY (ORCPT ); Fri, 8 Feb 2013 05:15:24 -0500 In-Reply-To: <20130207205335.GA28084@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 02/07/2013 09:53 PM, Theodore Ts'o wrote: >> "/sbin/grub-setup: warn: Embedding is not possible. GRUB can only be >> installed in this setup by using blocklists. However, blocklists are >> UNRELIABLE and their use is discouraged." > > This only happens if grub2 can't install itself in the space between > the MBR and the beginning of the first partition. So in practice, > most people won't see this unless they install the root partition on > the whole disk, or perhaps for disks with GUUID partition tables. It happens when you try to install the boot loader directly in the start sector of the root or boot partition. That's an option that many Linux distributions have been offering their users for multiboot support in the past, and which some people find pracital for multiboot systems. Thanks a lot, Martin -- Dr. Martin Wilck PRIMERGY System Software Engineer x86 Server Engineering FUJITSU Fujitsu Technology Solutions GmbH Heinz-Nixdorf-Ring 1 33106 Paderborn, Germany Phone: ++49 5251 525 2796 Fax: ++49 5251 525 2820 Email: martin.wilck@ts.fujitsu.com Internet: http://ts.fujitsu.com Company Details: http://ts.fujitsu.com/imprint