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Date: Tue, 25 Jul 1995 13:06:04 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199507250306.NAA07991@godzilla.zeta.org.au>
To: freebsd-current@freefall.cdrom.com, kuku@gilberto.physik.rwth-aachen.de
Subject: Re: panic after fdformat/disklabel
Sender: current-owner@FreeBSD.org
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[Redirected from hackers to current]

I just tried the following 

>fdformat /dev/rfd0a

><formatted floppy>

>disklabel -w -r fd0d floppy3

>(was not sure if the syntax was correct)

fd0d is bogus, should be fd0.

>*poof*

>Fatal trap 12: page fault while in kernel mode
>...

This is easy to duplicate by reading from /dev/rfd0 using

	char buf[8192];
	main() { lseek(0, 8192ll, 0); read(0, buf, sizeof buf); }

but for some reason it isn't easy to duplicate by reading using dd.
The lseek is to avoid the magic label sector but doesn't make any
difference.

Bruce