Abit ZH6 User Manual page 35

Introduction of the BIOS
➤ ➤ ➤ ➤ 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.
➤ ➤ ➤ ➤ 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 the INT 13h extension function,
enabling the LBA mode to support hard disk drive capacities exceeding 8.4GB.
➤ ➤ ➤ ➤ 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: None'360K, 5.25 in. ' 1.2M, 5.25in. ' 720K,
3.5 in. ' 1.44M, 3.5 in. ' 2.88M, 3.5 in. ' Back to 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: None'360K, 5.25 in. ' 1.2M, 5.25in. ' 720K,
3.5 in. ' 1.44M, 3.5 in. ' 2.88M, 3.5 in. ' Back to 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
User's Manual