My Lenovo Yoga 720-I3KB came with a tiny SSD installed, so I swapped it for a 1TB Intel SSD. In order for the system to recognize the drive I had to change the SATA Controller mode from RAID to AHCI. Also, 6 months later a Lenovo automatic firmware update overwrote this setting and caused my system to crash on boot....thankfully, I remembered about this controller mode change.