Date: Fri, 19 Nov 2010 18:02:59 +0100 From: Matthias Apitz <guru@unixarea.de> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: copying /dev/da0 with dd(1) to file: output differs Message-ID: <20101119170259.GA3741@current.Sisis.de> In-Reply-To: <201011191537.25867.hselasky@c2i.net> References: <20101119143337.GA3023@current.Sisis.de> <201011191537.25867.hselasky@c2i.net>
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El día Friday, November 19, 2010 a las 03:37:25PM +0100, Hans Petter Selasky escribió: > On Friday 19 November 2010 15:33:37 Matthias Apitz wrote: > > Hello, > > > > How is this possible: > > > > $ dd if=/dev/da0 of=f1 > > 7892087+0 records in > > 7892087+0 records out > > $ dd if=/dev/da0 of=f2 > > 7892087+0 records in > > 7892087+0 records out > > $ diff f1 f1 > > Files f1 and f2 differ > > > > (and no, /dev/da0s1a is not mounted). > > > > Thx > > > > matthias > > Hi, > > Can you dump the data into hex using hexdump -C and show us the difference. Note: the output of the dd(1) is around 3.8 GByte. I compared the 1st 2.000.000 lines of the hexdump: no diff; any better tool to show the 1st block which differs? > Usually you would use bs=65536 (Does that change anything)? Same result: they differ :-( matthias -- Matthias Apitz t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211 e <guru@unixarea.de> - w http://www.unixarea.de/
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