From owner-freebsd-hackers  Wed Mar 28  7:59:10 2001
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To: Ceri Storey <c.storey@student.umist.ac.uk>
Subject: Re: accessing ide 
Cc: Peter Pentchev <roam@orbitel.bg>,
	Sandeep Kohli <fuhrer6mill@yahoo.com>,
	fbsd-hackers <freebsd-hackers@FreeBSD.ORG>
In-reply-to: Your message of "Wed, 28 Mar 2001 10:42:40 +0100."
		<20010328104240.B443@cds220.halls.umist.ac.uk> 
References: <20010328104240.B443@cds220.halls.umist.ac.uk>  <3AC1D2B2.F3244CA2@yahoo.com> <20010328113625.C5524@ringworld.oblivion.bg> 
Date: Wed, 28 Mar 2001 08:57:34 -0700
From: Warner Losh <imp@harmony.village.org>
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In message <20010328104240.B443@cds220.halls.umist.ac.uk> Ceri Storey writes:
: but these two command lines give me different results, eg:
: cds220# head -c 32 /dev/ad0c | hd
: so they are not equivalent?

ad0 is the whole device.  ad0c is the whole slice.  These can be the
same, but are often different.  /dev/ad0 is the right device to open
if you want to access the mbr.

Warner

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