Asus Motherboard P5LD2 - Manual (Page 77)

ASUS P5LD2 4-17
Onboard IDE Operate Mode [Enhanced Mode]
Allows selection of the IDE operation mode depending on the installed
operating system (OS). Set to [Enhanced Mode] if you are using native OS
including Windows ® 2000/XP. Configuration options: [Disabled]
[Compatible Mode] [Enhanced Mode]
Enhanced Mode Support On [S-ATA]
Allows you to use native OS on Serial ATA and Parallel ATA ports. It is
recommend that you do not change the default setting for better OS
compatibility. In this setting, you may use legacy OS on the Parallel
ATA ports only if you do not install any Serial ATA device.
The P-ATA+S-ATA and P-ATA options are for advanced users only.
If you set to any of these options and encountered problems, revert
to the default setting S-ATA. Configuration options: [S-ATA+P-ATA]
[S-ATA] [P-ATA]
The Onboard IDE Operate Mode and sub-menu items appear only when
the Configure SATA As item is set to [Standard IDE].
Onboard Serial-ATA BOOTROM [Enabled]
Enables or disables the onboard Serial ATA boot ROM.
Configuration options: [Disabled] [Enabled]
The Onboard Serial-ATA BOOTROM appears only when the Configure
SATA As item is set to [RAID].
If you want to use the Serial ATA hard disk drives as Parallel ATA physical
storage devices, set this item to [Standard IDE].
If you want the Serial ATA hard disk drives to use the Advanced Host
Controller Interface (AHCI), set this item to [AHCI]. For details on AHCI, go
to: www.intel.com/support/chipsets/imst/sb/CS-012304.htm
www.intel.com/support/chipsets/imst/sb/CS-012305.htm
The SATA controller is set to Native mode when this item is set to [RAID]
or [AHCI].