From owner-freebsd-questions@FreeBSD.ORG Thu Sep 20 05:03:48 2007 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0D5DE16A418 for ; Thu, 20 Sep 2007 05:03:48 +0000 (UTC) (envelope-from freebsd@meijome.net) Received: from sigma.octantis.com.au (ns2.octantis.com.au [207.44.189.124]) by mx1.freebsd.org (Postfix) with ESMTP id B753113C458 for ; Thu, 20 Sep 2007 05:03:47 +0000 (UTC) (envelope-from freebsd@meijome.net) Received: (qmail 18893 invoked from network); 20 Sep 2007 00:03:47 -0500 Received: from 124-170-25-18.dyn.iinet.net.au (HELO localhost) (124.170.25.18) by sigma.octantis.com.au with (DHE-RSA-AES256-SHA encrypted) SMTP; 20 Sep 2007 00:03:46 -0500 Date: Thu, 20 Sep 2007 15:03:43 +1000 From: Norberto Meijome To: jekillen Message-ID: <20070920150343.06ebc690@meijome.net> In-Reply-To: <7f28909c2f575ccd98796e2af18d4e05@prodigy.net> References: <7f28909c2f575ccd98796e2af18d4e05@prodigy.net> X-Mailer: Claws Mail 3.0.1 (GTK+ 2.10.14; i386-portbld-freebsd6.2) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: FreeBSD Mailing List Subject: Re: Hard drive RPM X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Sep 2007 05:03:48 -0000 On Wed, 19 Sep 2007 17:47:19 -0700 jekillen wrote: > Is there a utility for measuring the effective RPM of a hard disk? > A software tackometer? not sure, ultimatebootcd , as it has been suggested, may have some answers. For reference, just get the drive model and get the full specs from the manufacturer's site. You can also peruse hardware testing sites such as toms hardware and others for tests on that particular drive. > I have one that was expressly advertised on the package to be > 120 Gb capacity, and in fact only 111Gb are available for storage. > That is a 9 Gb discrepancy. A Fire wire drive I have is also designated > as 120 Gb and actually only has 117 Gb usable capacity. > Like 9Gb is enough for several operating systems. 3Gb is even > enough for an operating syste Advertised sizes are for unformatted media. Each filesystem will use different amount of physical resources (sectors in the disk) to hold its metadata, so that will of course vary. I suppose you can always use the disk in raw ... using dd or some other clever tool you may devise... :D let me know how it goes :) you may be able to increase the amount of available space (of course, depending on the filesystem used) by modifying the block size, but that will usually affect the number of total inodes (or equivalent in NTFS / others) available... man tuning should have a section on this, as well as your filesystem of choice documentation (eg, man newfs in BSd, man mk* in linux , NTFS docs @ MSDN ) B _________________________ {Beto|Norberto|Numard} Meijome "Peace can only be achieved by understanding." Albert Einstein I speak for myself, not my employer. Contents may be hot. Slippery when wet. Reading disclaimers makes you go blind. Writing them is worse. You have been Warned.