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Chapter 3
BIOS tricks DOS (or other OS) so that the number of cylinders is less than 1024 by
dividing it by 2. At the same time, the number of heads is multiplied by 2. A
reverse transformation process will be made inside INT13h in order to access the
right HDD address.
Auto detect
If using Auto detect, the BIOS will automatically detect the IDE hard disk
mode and set it to one kind of HDD modes.
3. Remark
To support LBA or LARGE mode regarding HDDs, there must be some
softwares involved which are located in Award HDD Service Routine
(INT13h). It may fail to access a HDD with LBA (LARGE) mode selected if
you are running under an Operating System which replaces the whole INT
13h.
Power - On Boot
If you have made all the changes to CMOS values and the system can not boot
with the CMOS values selected in Setup, restart the system by turning it OFF
then ON or press the "RESET" button on the system case. You may also
restart the system by simultaneously pressing the < Ctrl >, < Alt > and < Del
> keys.
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