IDE Primary Slave

This menu is used to set the data for the hard disk connected as master to the first IDE bus. The hard disk data (size, number of cylinders, heads, sectors, pre-compensation and home position of the heads when the disk is switched off) are displayed automatically for the connected hard disk.

Phoenix - AwardBIOS CMOS Setup Utility

IDE Primary Slave

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F5: Previous Values F6: Fail-Safe Defaults F7: Optimized Defaults

IDE HDD Auto-Detection:

Automatic detection of the hard disk is initiated by pressing the <Enter> key. After a few seconds the physical data of the connected hard disk should be displayed in the lower section of the menu.

IDE Primary Master:

This parameter is used for configuring the IDE bus. The following options are available:

• None (no hard disk connected to this bus connection)
• Auto (auto-detection during each boot process)
• Manual (the hard disk is addressed with the set parameters)

Access Mode:

This option can be used to select the operating system for the hard disk. Setting options: CHS, LBA, LARGE, or Auto. Auto is the recommended setting. Normal (standard) mode supports hard disks with a capacity of up to 528 MB. This mode uses positions for data access that are specified via cylinders (CYLS), heads, and sectors. The older LBA (Logical Block Addressing) mode can support hard disks with a capacity of up to 8.4 GB. This mode uses a different method for calculating the position disk data to be accessed. It translates cylinders, heads and sectors into a logical address for the data location. Large hard disks support this mode. The BIOS supports the INT 13h extension function that enables the LBA mode to manage hard disk drives with a capacity of more than 8.4 GB. If the number of cylinders (CYLs) on the hard disk exceeds 1024 and DOS cannot support it, or if your operating system does not support LBA mode, LARGE mode should be selected. The following options are available for setting the hard disk access mode:

• CHS
• LBA
• LARGE
• Auto

The following parameters are automatically determined and displayed.

Capacity

Storage capacity of the hard disk. This value is calculated from the individual hard disk parameters.

Cylinder

Define or set the number of cylinders. Depending on the BIOS version and the manufacturer it varies between 1,024 and 16,384 cylinders.

Head

Define or set the number of heads. The number is between 1 and 16 heads.

Precomp

Write pre-compensation, required for older hard disks. This parameter specifies the cylinder from which a difference in the information density is to be expected.

Landing Zone

This parameter defines the so-called landing zone or park cylinder. This is the resting position for the hard disk head when the hard disk motor is switched off.

Sector

Define or set the number of sectors per track. Up to 63 sectors are supported, for Phoenix up to 64.