No ACHI on Studio XPS 435 MT (2009) ?

You need to select Raid.  This will enable ACHI on the SATA ports.  You need to do this before the operating system is installed on the new SSD.  

Thank you for your answer. But when i want to choose RAID, i have to select 2 disks minimum... (is it because windows is installed on the new SSD ?) (and i got 2HHD without windows installed on it)

Yes.  You will need to reinstall windows on the SSD after selecting Raid.  

Hi,

I tested few things :

- I tried to safe erase my SSD to become out-of-the-box but no success, with samsung magician, so i used the windows tool to remove partition. (i tried the following things with the SSD with partition and without (but no OS on it))

- I plugged only my SSD and CD/DVD on sata ports

- Tried to turn RAID, but can't

- Tried to plug others disks (HDDs) and i can RAID with 2 disks minimum

conclusion : I don't know why, I can't put RAID for my new SSD (i tried on others HDDs too, same issue, 2 devices minimum)

Thanks again for helping me.

Hi NOaMTL,

You can select RAID for the controller mode with a single hard drive. It's not necessary to set up an actual RAID disk array.

Just to be sure we're talking about the same thing, you should be looking in the BIOS (F2) for this setting, not the Intel RAID  BIOS (Ctrl-i).

I pressed F2 to change the controler ata to RAID, then i presses Ctrl-i to create the "RAID SSD".