Abit IT5E Series User Manual page 37

Introduction of BIOS
Computer
knowledge
CMOS DATA
Maybe you have heard somebody saying that their
CMOS DATA was lost. What is the CMOS? Is it
important? The CMOS is the memory used to store the
BIOS parameters that you have configured. This
memory is passive. You can read its data, and you can
also store data in it. But this memory has to be powered
by a battery, in order to avoid any loss of its data when
the computer is turned off. Since you may have to
change the CMOS battery when it is out of power and
indoing so, you will loose all CMOS data, therefore, we
recommend that you write down all the parameters of
your hardware, or to put a label with these parameters
on your hard disk.
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