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I got myself one Lenovo T431s that came with windows 8 and i did not like that so i decided to format and now when i am going to us the Intel Rapid Storage Technology there is no option for "Enable Acceleration".

I have read couple of threads and all of then say then I need to activate raid but there is no option for that in the BIOS only ACHI or Compatible and they both don't do nothing.

So what could I do ? there is one 500Gb HDD and one 28Gb M-Sata SSD drive.