DFI G486VPC User Manual page 41

Enter your choice, and press <Enter> to accept the parameters or press
<Esc> to abort. The parameters of the hard disk will be displayed in the
Standard CMOS Setup.
Hard Drive Mode
The G486VPC supports three HDD modes: Normal, LBA and Large. If
your hard disk drive does not support LBA mode, the " LBA" option will
not be displayed. If your HDD has 1024 or fewer cylinders, the " Large"
option will not be displayed.
Normal Mode
The Normal mode is the generic access mode in which neither the
BIOS nor the IDE controller will make any transformations during hard-
drive access.
The maximum number of cylinders, heads and sectors for Normal mode
are 1024, 16 and 63, respectively.
x no. Heads
x no. Sectors
x bytes per sector
If you set your HDD to Normal mode, the maximum accessible HDD
space will be 528 megabytes even though the physical size of the HDD
may be greater than that.
LBA (Logical Block Addressing) Mode
The LBA mode is a HDD accessing method to overcome the 528 mega-
bytes limitation. The number of cylinders, heads and sectors shown on
the screen may not be the actual number for the HDD.
During the HDD accessing, the IDE controller will transform the logical
address described by the sector, head and cylinder number into its own
physical address inside the HDD.
no. Cylinders (1024)
( 16)
( 63)
( 512)
528 megabytes
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