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From: Achim Gratz <Stromeko AT nexgo DOT de>
Subject: Re: Problem reading physical drive data with Windows 8 and cygwin, data is truncated by 288 sectors
Date: Sun, 30 Sep 2012 21:26:07 +0200
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GrahamC writes:
> dd bs=512 if=/dev/sdg of=/dev/null
____________________^^^

This is the raw device.

> dd bs=512 if=/dev/sdh1 of=/dev/null
____________________^^^^

This is the first partition (or fs if unpartitioned) on that device.  It
obviously cannot be larger than the device unless there's some error,
but it can certainly be smaller.

> Those 8036139008 bytes do exactly match the first 8036139008 of
> the 8036286464 read on the Linux system so it is definitely the
> same device.

It is quite common that a few sectors at the end of the device (or
between partitions) aren't used to keep certain constraints on the
layout of the device or the file system.



Regards,
Achim.
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