> It seems Windows users have more trouble than Linux users and it appears > if you are using RAID you can't use ACHI. It is implied that if you > don't use ACHI the speed of data transfer will be reduced in Serial Hard > Drives. So it is the old Lose-Lose situation where you never want to be. Older Windows doesn't do AHCI without driver additions. Current Linux is happiest with AHCI and will do raid and non-raid with AHCI generally getting better performance too. Alan