Re: How do I do a COLD Reboot on FreeBSD?
From: Billy Newsom (smartweb_at_leadhill.net)
Date: 01/31/05
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Date: Mon, 31 Jan 2005 12:53:04 -0600 To: freebsd-questions@freebsd.org
Jerry McAllister wrote:
>
> Well, I guess I completely do not understand what you are asking.
>>From anything I can get from what you write here, its behavior is
> normal and expected. What is the problem and what are you trying
> to fix or to get it to do?
>
> A cold boot - which is what you ask about in your original post - is
> a boot all the way up from a powered off machine as far as I know.
> So, all I did was explain how to get what you asked for in the post.
No, I said a cold reboot. That's the term for a reboot which runs the entire
POST, counts memory, etc. The screen looks identical to a cold start or cold
boot. We all know what the warm reboot means -- that's when many parts of
the POST are skipped. Windows uses a cold reboot, for example, when you
click "Restart" on the Shutdown menu. FreeBSD does a warm reboot using the
reboot command. The warm reboot may save thirty to sixty seconds over the
cold reboot. A warm reboot typically skips the memory check and does a
cursory check of hard drive parameters, etc. to save time.
If you use a PC DOCTOR disk and tell it to reboot, it will do a cold reboot.
When you flash your BIOS from DOS, it will usually do a cold reboot when it
exits. When you save changes and reboot from the BIOS setup screen, it will
do a cold reboot. Many other examples are possible.
What I tried to explain is that this PC crashes on the subsequent boot if a
warm reboot is performed by FreeBSD. But if I could perform a cold reboot
every time, this would solve the issue. A cold reboot is not the act of
"shutting the power off and turning it back on." That is called a power
cycle and it is obviously manual. A cold reboot is done by a special
software command.
>
> Another small guess - are you looking for 'shutdown -r now' by
> any chance?
No, it fails.
> If you want something else, you will need to explain that. Who knows
> if anyone will know what to do about that - at least not until you
> reveal what it is.
The revelation is at hand.
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- Previous message: kip winston: ".html problems"
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