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Date:      Fri, 31 May 2002 16:37:16 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Ruslan Ermilov <ru@FreeBSD.ORG>
Cc:        hackers@FreeBSD.ORG
Subject:   Re: dmesg buffer preserved between reboots
Message-ID:  <20020531213716.GD58285@dan.emsphone.com>
In-Reply-To: <20020531210430.GA5725@sunbay.com>
References:  <20020531210430.GA5725@sunbay.com>

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In the last episode (Jun 01), Ruslan Ermilov said:
> One of my remote i386 machines preserves the dmesg buffer between
> reboots, and others not.  What features cause this buffer to be
> preserved?  I saw this on Alphas, and thought that this was caused

If your BIOS zeros out memory as part of a warmboot, you'll lose the
dmesg buffer.  I've got docked laptops that don't seem to ever zero the
data, even on a power cycle.

-- 
	Dan Nelson
	dnelson@allantgroup.com

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