QDI Legend-III P6I440LX/AV, Manual, Page: 52 / 75

AWARD BIOS Description
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Users can select a mode which is appropriate for them
.
Change to Standard CMOS Setup
SIZE CYLS HEADS PRECOMP LANDZ SECTOR MODE
Drive C: User(516MB) 1120 16 65535 1119 59 Normal
Drive D: User(203MB) 684 16 65535 685 38 Normal
When HDD type is in “user” type, the “MODE” option will be opened for
user to select their own HDD mode.
2. HDD Modes
The Award BIOS supports 3 HDD modes: NORMAL, LBA and LARGE,
and Auto detect.
NORMAL
Generic access mode in which neither the BIOS nor the IDE controller
will make any transformation during accessing. The maximum number of
cylinders, heads and sectors for NORMAL mode are 1024,16 and 63.
If user sets his HDD to NORMAL mode, the maximum accessible HDD
size will be 528 megabytes even though its physical size may be greater
than that.
LBA (Logical Block Addressing) mode
A new HDD accessing method to overcome the 528 Megabyte bottleneck.
The number of cylinders, heads and sectors shown in setup may not be
the number physically contained in the HDD.
During HDD accessing, the IDE controller will transform the logical
address described by sector, head and cylinder number into its own
physical address inside the HDD. The maximum HDD size supported by
LBA mode is 8.4 Gigabytes.
LARGE mode
Some IDE HDDs contain more than 1024 cylinder without LBA support
(in some cases, user do not want LBA). The Award BIOS provides
another alternative to support these kinds of HDD.
BIOS tricks DOS (or other OS) 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.