Hi Grtmkr,

Are you following the steps described in this thread? You must have Intel Smart Response Technology configured first.

Yes I saw that thread but no matter what drivers I install, I can't get SATA Operation in BIOS to give me any other choices but ATA or AHCI.

This is the step that I cannot execute since I'm only offered 2 options in BIOS (I'm not given the option to change the mode to anything other than AHCI or ATA):

b. Confirm that the system BIOS is set to RAID on mode (in some system BIOS menus, this mode may be called Smart Response mode or Rapid Start mode).
Note: if the system is in AHCI or ATA mode, Smart response cannot be configured until the mode is changed.

Intel Rapid Start Technology uses a small SSD drive (usually only 32 GB in size or less) to cache a larger slower standard hard drive.  Intel Rapid Start Technology is for systems that have both an SSD and a standard hard drive.

I don't believe that the XPS 13 ultrabook supports dual drives.  In fact, I believe it has only an SSD drive which doesn't require Intel Rapid Start Technology at all as your system doesn't use the older hard drive style with the physically spinning disks.

I would seek information on how to turn this feature off in the software or uninstall that feature.  Since that model doesn't simultaneously support both an SSD and a old style hard drive, I don't believe that anything you do will have that option show up in the BIOS.  I doubt the BIOS supports a feature that can't be utilized regardless of what you do because you only have the single SSD drive.