From owner-freebsd-hardware@FreeBSD.ORG Mon Jun 7 14:21:00 2004 Return-Path: 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 3051316A4CE for ; Mon, 7 Jun 2004 14:21:00 +0000 (GMT) Received: from gaff.hhhr.ision.net (gaff.hhhr.ision.net [195.180.9.213]) by mx1.FreeBSD.org (Postfix) with ESMTP id B6C4A43D2F for ; Mon, 7 Jun 2004 14:20:58 +0000 (GMT) (envelope-from ohoyer@ohoyer.de) Received: from gaff.hhhr.ision.net (ohoyer@localhost [127.0.0.1]) by gaff.hhhr.ision.net (8.12.11/8.12.11) with ESMTP id i57EKtqD090533; Mon, 7 Jun 2004 16:20:55 +0200 (CEST) (envelope-from ohoyer@ohoyer.de) Received: from localhost (ohoyer@localhost)i57EKsix090530; Mon, 7 Jun 2004 16:20:55 +0200 (CEST) (envelope-from ohoyer@ohoyer.de) X-Authentication-Warning: gaff.hhhr.ision.net: ohoyer owned process doing -bs Date: Mon, 7 Jun 2004 16:20:54 +0200 (CEST) From: Olaf Hoyer Sender: ohoyer@gaff.hhhr.ision.net To: Daniel Ellard In-Reply-To: <20040607085908.Y42261@bowser.eecs.harvard.edu> Message-ID: <20040607161901.Q90512@gaff.hhhr.ision.net> References: <1086609808.314.9.camel@wokshopbsd.oocltd.dom> <20040607085908.Y42261@bowser.eecs.harvard.edu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: Adam Retter cc: freebsd-hardware@freebsd.org Subject: Re: How to Format 1MB Floppy X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jun 2004 14:21:00 -0000 On Mon, 7 Jun 2004, Daniel Ellard wrote: > On Mon, 7 Jun 2004, Adam Retter wrote: > > > Also someone mentioned that these 1mb disks only format as 720kb - is > > that true? > > That was probably me... What I meant is that there's a built-in > option to newfs_msdos for 720K disks, but I don't think there's one > for 1MB disks. If you want to use the entire disk, and the 1MB is the > real size (not some phony marketing size) then you'll need to specify > the geometry to the disk explicitly. You'll need to get this from > the disk vendor, I guess. > The raw capacity of those 3,5", DD disks is 1MB unformatted, and formatted for _PC_ its 720 kb. There were some different architectures, like Commodore Amiga and I think Apple, that used a different format strategy and were able to use more of that space. (Anyone remember VGA-Copy under DOS? also some tool to get some real weird formats done) HTH Olaf -- Olaf Hoyer ohoyer@gaff.hhhr.ision.net Fuerchterliche Erlebniss geben zu raten, ob der, welcher sie erlebt, nicht etwas Fuerchterliches ist. (Nietzsche, Jenseits von Gut und Boese)