User Manual

Table Of Contents
63
Section 6. Customizing Your Bios Settings
77-0100-003 19 January 2001
Primary/Secondary Master and Slave Settings
Size Displays the hard disk capacity.
Cylinders Displays the number of cylinders on the hard disk drive.
Heads Displays the number of heads per cylinder on the hard disk drive.
LBA Mode LBA (Logical Block Addressing) mode is used to support IDE hard disks larger than 504 MB.
LBA support is required for compatibility with the FAT32 system. Only some hard disk drives
support LBA mode. The default setting depends on the hard disk drive type.
Blk Mode Enables or disables block mode, which allows multi-sector transfer of
data. Only some hard drives support block mode.
PIO Mode PIO (Programmed Input/Output) mode refers to data transfer method used by IDE drives.
These modes use the CPU’s registers for data transfer in contrast with DMA (Direct Memory
Access), which transfers directly between main memory and the peripheral device. The default
value Auto lets the system automatically read setup information it needs for setup from hard
disk drive. Five explicit values, 0 to 4, are also possible.
32Bit Mode Enables hard drive 32-bit data transfer. Only some hard disk controllers support
32Bit mode.
CAUTION Before attempting to configure a hard disk drive, make sure you have the configuration information
supplied by the manufacturer of your hard drive. Incorrect settings can result in your system not recognizing the
installed hard disk.