From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757636Ab0JWPVT (ORCPT ); Sat, 23 Oct 2010 11:21:19 -0400 Received: from ironport2-out.teksavvy.com ([206.248.154.181]:20404 "EHLO ironport2-out.pppoe.ca" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757416Ab0JWPVS (ORCPT ); Sat, 23 Oct 2010 11:21:18 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApIBAHeawkxLd/sX/2dsb2JhbAAHgxfIYJFZgSKDMnQEj1E X-IronPort-AV: E=Sophos;i="4.58,228,1286164800"; d="scan'208";a="80487141" Message-ID: <4CC2FD6D.3080709@teksavvy.com> Date: Sat, 23 Oct 2010 11:21:17 -0400 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.11) Gecko/20101013 Thunderbird/3.1.5 MIME-Version: 1.0 To: Daniel Taylor CC: linux-kernel@vger.kernel.org Subject: Re: sata_mv and Highpoint RocketRAID 230x, corruption? References: <4CC24186.1040001@teksavvy.com> <25B374CC0D9DFB4698BB331F82CD0CF20D5FFC@wdscexbe08.sc.wdc.com> In-Reply-To: <25B374CC0D9DFB4698BB331F82CD0CF20D5FFC@wdscexbe08.sc.wdc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10-10-22 10:21 PM, Daniel Taylor wrote: >Mark Lord wrote: >> >> The RocketRaid BIOS that I examined here a couple of years ago, >> liked to write "metadata" over top of whatever was in certain sectors >> near the end of the drive. EVEN FOR NON-RAID DRIVES. >> >> I think it was the last even (power-of-two) multiple of 1GB >> or something, >> so if you leave the final 2GB untouched, you're guaranteed to >> avoid it. >> >> Thus the recommendation. > > What happens to the backup GPT at the end of the disk? Dunno.