From owner-freebsd-questions@FreeBSD.ORG Mon Feb 2 17:57:53 2009 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 D302510656CC for ; Mon, 2 Feb 2009 17:57:53 +0000 (UTC) (envelope-from web@umich.edu) Received: from hellskitchen.mr.itd.umich.edu (smtp.mail.umich.edu [141.211.14.82]) by mx1.freebsd.org (Postfix) with ESMTP id 84BDA8FC18 for ; Mon, 2 Feb 2009 17:57:53 +0000 (UTC) (envelope-from web@umich.edu) Received: FROM dell1 (Unknown [141.211.15.39]) BY hellskitchen.mr.itd.umich.edu ID 49873420.4E9E1.29608 ; 2 Feb 2009 12:57:52 -0500 Date: Mon, 2 Feb 2009 12:56:19 -0500 From: William Bulley To: Mel Message-ID: <20090202175619.GD1012@dell1> Mail-Followup-To: Mel , freebsd-questions@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i Cc: freebsd-questions@freebsd.org Subject: Re: short-changed on SD card? 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: Mon, 02 Feb 2009 17:57:54 -0000 According to Mel on Mon, 02/02/09 at 12:46: > > On Monday 02 February 2009 07:52:44 William Bulley wrote: > > Recently purchased a brand new 2.0 GB secure digital (SD) card. > > > > When I plugged this into a USB dongle and plugged the USB dongle > > into an available USB socket on my FreeBSD 7.0-STABLE system the > > output from dmesg(8) reported this: > > > > da1: 960MB (1967616 512 byte sectors: 64H 32S/T 960C) > > > > This is much closer to 1.0 GB than 2.0 GB so I at once wondered > > if I had been scammed in my purchase of this brand new SD card. > > > > Once I'd mounted /dev/da1s1 on /mnt, the df(1) command also reported > > 960 MB. I then copied a 300+ megabyte file onto /mnt and then ran > > the df(1) command again. This time it reported 1.9 GB total and > > 1.6 GB available. WHAT IS GOING ON HERE? Am I going crazy? > > On a hunch, it's really 1G FAT, 1G HFS ("mac"). You could reformat it using > fdisk/newfs. That might be a good hunch, but the SD card itself just says "2.0 GB" on the outside - no mention there or when I purchased it to have any Mac-ness. I don't recall seeing anything Mac-ish when I ran the fdisk(8) command as % fdisk da1 The output then seemed to correctly reflect that partition (slice) one (1) was 960 MB in size. I tried later (once the system had recovered and the fsck(8) had finished) to use fdisk(8) to put 1920 MB into slice one. But that didn't seem to work. I marked all the other three slices as "UNUSED". Is there any trick to using fdisk(8) that is hidden in the man page which I evidently missed? I used the "-i" flag and it led me by the had through each slice - I thought I did the "right" thing, but I was never able to mount(8) the SD card after that, even though dmesg(8) reported "da1" as being there. I kept getting "invalid parameter" or the like when I tried mounting as I am used to: # mount_msdosfs -l /dev/da1s1 /mnt I also tried: # mount_msdosfs -l /dev/da1 /mnt But both versions failed. Finally, in desperation, I formatted the SD card on a Windows XP laptop. Windows put it back into FAT shape (using the low level - not the "quick" - format there) and gave it 960 MB, sigh... :-( Regards, web... -- William Bulley Email: web@umich.edu