Date: Mon, 27 Dec 2010 16:35:43 -0800 From: perryh@pluto.rain.com To: axelbsd@ymail.com, markand@live.fr Cc: freebsd-questions@freebsd.org Subject: Re: [Bulk] FreeBSD crash and CMOS bad checksum Message-ID: <4d1930df.v5575ML0Khi8eeVp%perryh@pluto.rain.com> In-Reply-To: <AANLkTikbG_Kx2G-3zboru8_n=Ahffh1cjWfgBjsMAmKS@mail.gmail.com> References: <BLU0-SMTP1469491DB41924AC4AAC198A8000@phx.gbl> <AANLkTikbG_Kx2G-3zboru8_n=Ahffh1cjWfgBjsMAmKS@mail.gmail.com>
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Alexandre <axelbsd@ymail.com> wrote: > On Mon, Dec 27, 2010 at 9:59 AM, David Demelier <markand@live.fr> wrote: > > I was working and suddenly FreeBSD freezes, I needed to hard reboot > > and when the BIOS post came two beeps appears with this message: > > > > CMOS/GPNV checksum bad > > ... > > What does that mean? I guess a hardware failure is coming up. > > Have you tried to change the battery on the moterboard ? IME, a failing CMOS battery usually causes that sort of problem only when power-cycling the system. If the "hard reboot" was done using a "reset" button, without having to turn off the power, it's more likely that whatever caused FreeBSD to freeze also corrupted the CMOS contents. One easy way to find out is to shut down normally, power off, leave it off for a couple of minutes, then turn it back on. If it is a battery problem the BIOS will be complaining about the CMOS again, due to power having been off, even though the shutdown was clean. Then you get to hope that the CMOS in fact has a replaceable battery, not one of those CMOS-and-battery-all-in-one-package things that some manufacturers have been known to use.
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