Abit BX6 User Manual page 31

Introduction of BIOS
LBA or LARGE.
The HDD auto detection option in the Main Menu will automatically detect
the parameters of your hard disk and the mode supported.
ä Normal mode:
Standard normal mode supports hard disks of 528MB or less.
This mode directly uses positions indicated by Cylinders (CYLS),
Heads, and Sectors to access data.
ä LBA (Logical Block Addressing) mode:
The earlier LBA mode can support HDDs capacity of up to
8.4GB, and this mode uses a different method to calculate the
position of disk data to be accessed. It translates Cylinders
(CYLS), Heads and Sectors into a logical address where data are
located. The Cylinders, Heads, and Sectors displayed in this
menu do not reflect the actual structure of the hard disk, they are
just reference values used to calculate actual positions. Currently,
all high capacity hard disks support this mode, that's why we
recommend you use this mode. Currently, the BIOS can support
INT 13h extension function, then the LBA mode supports hard
disk drives capacity exceeding 8.4GB.
ä LARGE Mode:
When the number of cylinders (CYLs) of the hard disk exceeds
1024 and DOS is not able to support it, or if your operating
system does not support LBA mode, you should select this mode.
Drive A:
If you have installed the floppy disk drive here, then you can select the type of
floppy drive it can support. Six options are available: Noneè360K, 5.25 in.
è1.2M, 5.25 in. è720K, 3.5 in. è1.44M, 3.5 in. è2.88M, 3.5 in. è
None.
Drive B:
If you have installed the floppy disk drive here, then you can select the type of
floppy drive it can support. Six options are available: Noneè360K, 5.25 in.
è1.2M, 5.25 in. è720K, 3.5 in. è1.44M, 3.5 in. è2.88M, 3.5 in. è
None.
FDD supporting 3 Mode:
3 Mode floppy disk drives (FDD) are 3 1/2" drives used in Japanese computer
systems. If you need to access data stored in this kind of floppy, you must
select this mode, and of course you must have a 3 Mode floppy drive.
3-9
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