From owner-freebsd-current@FreeBSD.ORG Sat Dec 8 06:45:10 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id CE2BD7A6 for ; Sat, 8 Dec 2012 06:45:10 +0000 (UTC) (envelope-from sendtomatt@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id 90F948FC08 for ; Sat, 8 Dec 2012 06:45:10 +0000 (UTC) Received: by mail-pb0-f54.google.com with SMTP id wz12so859321pbc.13 for ; Fri, 07 Dec 2012 22:45:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type; bh=R+6KxkPrVce5h2lFS76e/2SCVboRbAbo+bzUfnfDuP0=; b=oRfzYppqv1xpuFLEBOWiHiQccUqjaBH5f0l0/ppXkBFcO6lOTcZDSUPf2xwh1X+Xpm cCgFdGUqxI+gjCoUIsj5ySfaB0cIylTtelUNq5R3BwCjPlCZUNbiirYmal4qimcjbivn 8S0hLiRNodQ3PwPO0bu08HtP5S13hcZXADRnOr6Td7FBeIT4IMQQjdasFCwICd2OxjIp FQPZuG+mVHx70q0C2eOivFInEHp/4yYUbUF6/x0geIUJEpoJK1cAyGXWwDpp6gRlDcvP QLC4AFMQkynQ12JBJyeGkv7W88mVSr177fHKGV++GYi/fAoKBEGLqijaTbhKk098mJct qeig== Received: by 10.68.132.98 with SMTP id ot2mr21868691pbb.39.1354949110224; Fri, 07 Dec 2012 22:45:10 -0800 (PST) Received: from flatline.local (70-36-223-239.dsl.dynamic.sonic.net. [70.36.223.239]) by mx.google.com with ESMTPS id na4sm7985249pbc.18.2012.12.07.22.45.05 (version=SSLv3 cipher=OTHER); Fri, 07 Dec 2012 22:45:09 -0800 (PST) Message-ID: <50C2E1D1.8060901@gmail.com> Date: Fri, 07 Dec 2012 22:44:33 -0800 From: matt User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Kevin Oberman Subject: Re: 9.1-RC3 LiveCD missing features References: <50C26999.6090802@gmail.com> <50C26EF3.5070300@ose.nl> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: Bas Smeelen , Adam Vande More , freebsd-current@freebsd.org, Tomek CEDRO X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Dec 2012 06:45:10 -0000 On 12/07/12 17:20, Kevin Oberman wrote: > > ports/sysutils/smartmontools? Most modern disks support S.M.A.R.T and > will log read or write errors as well as perform non-destructive > (though far from comprehensive) testing. This is the correct way, since the drive could be hiding bad blocks by reallocating dying sectors. Look at your pending sector count, this should be 0 on a good disk. If it does have a value, it should go away when the sector is moved/reallocated. Personally, I don't expect much advanced disk diagnosis out of a system installer (be it Linux, Windows or Freebsd). Use this (it's freedos): http://hddguru.com/software/2005.10.02-MHDD/ It can deallocate bad sectors (will require reformat) and show "slow" sectors as well, in a waterfall-type display. As far as in the base system, it may be a little late for this, but ZFS would indicate unreadable blocks via checksum errors after a scrub, would it not? Matt