[mythtvnz] Looks like my system drive is faulty - ideas?

Stephen Worthington stephen_agent at jsw.gen.nz
Sun Jun 24 05:59:01 BST 2012


On Sun, 24 Jun 2012 16:38:41 +1200, you wrote:

>A know reason for CMOS settings to go awry is a dying CMOS back up battery.
>I had to replace one this week.
>-Paul

Yes, but I have had the settings go bad with batteries that were fine
for several more years.  When the battery dies, it is usually fairly
obvious, with strange settings showing up in the BIOS screens, or the
settings reverting to defaults on each boot.  CMOS battery life is not
easy to predict either.  In a well designed motherboard, the CMOS RAM
should not be drawing more power than the lithium battery loses
sitting on a shelf.  And the shelf life of a lithium battery should be
7 years at least.  But some motherboards need the battery replaced as
often as every 2-3 years.  Typical seems to be around 4-5 years.



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