From owner-freebsd-small  Tue Apr  3 15:43:18 2001
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From: Luigi Rizzo <luigi@info.iet.unipi.it>
Message-Id: <200104032242.AAA70603@info.iet.unipi.it>
Subject: Re: what do the bytes 85 170 at location 510 in the fs image mean?
In-Reply-To: <3AC9FD88.34CEF268@aurora.regenstrief.org> from Gunther Schadow
 at "Apr 3, 2001 04:42:48 pm"
To: Gunther Schadow <gunther@aurora.regenstrief.org>
Date: Wed, 4 Apr 2001 00:42:28 +0200 (CEST)
Cc: freebsd-small@FreeBSD.ORG
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> Hi,
> 
> I am looking at the PicoBSD build/Makefile wondering what this
> 
> awk 'BEGIN {printf "%c%c", 85, 170}' | \
>   dd of=$(FS_NAME) obs=1 seek=510 conv=notrunc
> 
> is supposed to do. I mean, I understand what it does, but not
> why it needs this kind of magic?

it's the magic 0xAA55 or so that it is expected to be in the
boot sector. Turns out that this is unnecessary after you "dd" boot0
on the first sector of the image (see a recent picobsd script
/usr/src/release/picobsd/build/picobsd, NOT THE MAKEFILE)

	cheers
	luigi

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