Date: Mon, 31 Jan 2005 12:53:04 -0600 From: Billy Newsom <smartweb@leadhill.net> To: freebsd-questions@freebsd.org Subject: Re: How do I do a COLD Reboot on FreeBSD? Message-ID: <41FE7E90.3010208@leadhill.net> In-Reply-To: <200501311550.j0VFot428451@clunix.cl.msu.edu> References: <200501311550.j0VFot428451@clunix.cl.msu.edu>
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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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