In BIOS, under SATA Configuration I can choose IDE, AHCI or RAID. Normally I choose RAID. After finished installing Windows 7, I wanted to setup RAID 1 (mirror), but Windows' disk management only showed me 1 disk (instead of two). Also, it said "no" under fault tolerance.
In fact, during the installation only disk 1's partitions were shown (disk 2 is unpartition).
I want to dual boot two systems. Should I change RAID to ACHI under the configuration prior to Windows 7's setup? I think software RAID is better (in general)? What is the best option (since doing dual boot).