Date: Mon, 31 Jan 2005 16:55:30 -0600 (CST) From: Rich Winkel <rich@math.missouri.edu> To: Bart Silverstrim <bsilver@chrononomicon.com> Cc: freebsd-questions@freebsd.org Subject: Re: How do I do a COLD Reboot on FreeBSD? Message-ID: <200501312255.j0VMtUaw093544@pencil.math.missouri.edu> In-Reply-To: <c928fabf2e3d1fd3843b81d44eb08c07@chrononomicon.com> "from Bart Silverstrim at Jan 31, 2005 03:29:37 pm"
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According to Bart Silverstrim: > Warm boots basically just cycle the computer to restart the OS. It's > just restarting it, and power to the components has been maintained the > whole time so as far as the computer hardware is concerned nothing > really happened, just a chunk of memory access and the processor mode > getting kicked around a bit. It's been a long time, but it seems to me the byte at absolute address 0x412 (labelled MFG_TST in the old ibm bios listing) determines whether the bios does a full POST or not. If that value is nulled out before the reboot, I think it will do a full POST. Rich
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