Asus P5N-EM HDMI - Manual (Page 66)

2-18 Chapter 2: BIOS setup
Capacity
Displays the auto-detected hard disk capacity. This item is not configurable.
Cylinder
Shows the number of the hard disk cylinders. This item is not configurable.
Head
Shows the number of the hard disk read/write heads. This item is not configurable.
Sector
Shows the number of sectors per track. This item is not configurable.
Transfer Mode
Shows the Transfer mode. This item is not configurable.
After entering the IDE hard disk drive information into BIOS, use a disk utility,
such as FDISK, to partition and format new IDE hard disk drives. This is
necessary so that you can write or read data from the hard disk. Ensure to set
the partition of the Primary IDE hard disk drives to active.
Before attempting to configure a hard disk drive, ensure that you have the
correct configuration information supplied by the drive manufacturer. Incorrect
settings may cause the system to fail to recognize the installed hard disk.