DFI G5C900-B - Manual (Page 49)

49
COM Express Board
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.
On-Chip Primary PCI IDE
This field allows you to enable or disable the primary and secondary
IDE controller. The default is Enabled. Select Disabled if you want to
add a different hard drive controller
IDE Primary Master/Slave UDMA
These fields allow you to set the Ultra DMA in use. When Auto is
selected, the BIOS will select the best available option after checking
your hard drive or CD-ROM
Auto The BIOS will automatically detect the settings for
you.
Disabled The BIOS will not detect these categories.
SATA Mode
IDE This option configures the Serial ATA drives as
Parallel ATA storage devices.
AHCI This option allows the Serial ATA devices to use
AHCI (Advanced Host Controller Interface).