Asus M4N78 Pro - Manual (Page 47)

Chapter 2: BIOS setup 2-11
Block (Multi-sector Transfer) M [Auto]
Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from
and to the device occurs multiple sectors at a time if the device supports multi-sector transfer
feature. When set to [Disabled], the data transfer from and to the device occurs one sector at
a time.
Configuration options: [Disabled] [Auto]
PIO Mode [Auto]
Selects the PIO mode.
Configuration options: [Auto] [0] [1] [2] [3] [4]
DMA Mode [Auto]
Selects the DMA mode.
Configuration options: [Auto]
SMART Monitoring [Auto]
Sets the Smart Monitoring, Analysis, and Reporting Technology.
Configuration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer.
Configuration options: [Disabled] [Enabled]
2.3.7 Storage Configuration
This menu allows you to configure the SATA devices.
Onboard PCI IDE Controller [Enabled]
Enables or disables the onboard integrated IDE controller.
Configuration options: [Enabled] [Disabled]
OnChip S-ATA Channel [Enabled]
Enables or disables the OnChip SATA Channel.
Configuration options: [Enabled] [Disabled]
SATA Mode Select [SATA Mode]
Allows you to select the SATA type.
Configuration options: [SATA Mode] [RAID Mode] [AHCI Mode]
• If you want the Serial ATA hard disk drives to use the Advanced Host Controller Interface
(AHCI), set this item to [AHCI Mode]. The AHCI allows the onboard storage driver to
enable advanced Serial ATA features that increases storage performance on random
workloads by allowing the drive to internally optimize the order of commands.
• When SATA is configured as [SATA Mode] in BIOS, only SATA port 1-4 can be detected.
Ensure to install the AHCI driver to detect and use SATA port 5-6 in AHCI mode under
OS.
• If you want to create a RAID 0, RAID 1, RAID 5, and RAID 10 configuration from the
Serial ATA hard disk drives, set this item to [RAID Mode].