DFI SR100-N - Manual (Page 73)

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3
BIOS Setup
IDE HDD Block Mode
Enabled The IDE HDD uses the block mode. The system BIOS
will check the hard disk drive for the maximum block
size the system can transfer. The block size will depend
on the type of hard disk drive.
Disabled The IDE HDD uses the standard mode.
IDE DMA Transfer Access
This field is used to enable or disable the DMA transfer function of
an IDE hard drive.
SATA Mode
IDE This option configures the Serial ATA drives in IDE
mode.
AHCI This option allows the Serial ATA devices to use
AHCI (Advanced Host Controller Interface).
On-Chip Serial ATA
Disabled Disables the onboard SATA.
Combined Mode This option allows you to use both PATA and
SATA drives; allowing a maximum of 2 IDE
drives in each channel.
Enhanced Mode This option allows you to use both PATA and
SATA drives; allowing a maximum of 5 IDE
drives.
SATA Only SATA is operating in legacy mode.