DFI G5C100-NR - Manual (Page 104)

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BIOS Setup
Intel RAID BIOS
The Intel ICH7R chip allows configuring RAID on Serial ATA drives. It
supports RAID 0 and RAID 1.
When the system powers-up and all drives have been detected, the
Intel BIOS status message screen will appear. Press the <Ctrl> and
<I> keys simultaneously to enter the utility. The utility allows you to
build a RAID system on Serial ATA drives.
Important:
Before creating RAID, make sure you have installed the Serial
ATA drives and connected the data cables otherwise you won’t
be able to enter the RAID BIOS utility.
Refer to chapter 5 for steps in configuring RAID.