From owner-freebsd-hardware@FreeBSD.ORG Thu Dec 29 19:32:13 2005 Return-Path: X-Original-To: freebsd-hardware@freebsd.org Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 517E816A41F; Thu, 29 Dec 2005 19:32:13 +0000 (GMT) (envelope-from tlp@liquidx.org) Received: from illusionist.sov.kewlio.net.uk (fxp-0.712-illusionist.sov.kewlio.net.uk [85.116.0.25]) by mx1.FreeBSD.org (Postfix) with ESMTP id A591843D7F; Thu, 29 Dec 2005 19:32:12 +0000 (GMT) (envelope-from tlp@liquidx.org) Received: from [192.168.0.18] (71-33-104-72.bois.qwest.net [71.33.104.72]) (authenticated bits=0 user=tlp) by illusionist.sov.kewlio.net.uk (8.13.4/8.13.4) with ESMTP id jBTJW2Ya050857 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Thu, 29 Dec 2005 19:32:04 GMT From: Travis Poppe To: Jerry McAllister Date: Thu, 29 Dec 2005 12:32:00 -0700 User-Agent: KMail/1.8.3 References: <200512291922.jBTJMnYA000933@clunix.cl.msu.edu> In-Reply-To: <200512291922.jBTJMnYA000933@clunix.cl.msu.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200512291232.01100.tlp@liquidx.org> Cc: freebsd-questions@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Harddrive size being reported incorrectly? X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Dec 2005 19:32:13 -0000 On Thursday 29 December 2005 12:22 pm, Jerry McAllister wrote: > > Now, I understand that harddrive manufacturers measure things differently > > (1000kbytes per gbyte rather than 1024, or something like that) than > > expected, but I've been told by a few people that I should be getting > > around 305-312GB of available space after the drive has been formatted. > > They didn't do their arithmetic. > > When you slice and partition the drive, there will likely be a handful > of sectors that don't round out to an even value so those are dropped. > Then, when you do the newfs, some space is taken by the spare superblocks > and finally the system reserves 8%. So, I would say you are getting > it all. 289GB is before the 8% reservation. I actually turned that off with tunefs. Thanks to all who responded so quickly, makes me feel better about filling the drive up. Wanted to verify this before using the drive as to not end up having to re-newfs it in the future to gain back any possible unused space. Thanks, -- Travis Poppe IRC: tlp @ irc.freenode.net