not sure but my os drive boots but not listed on any sata ports i look in bios and see this sata 1 is my 3tb and sata 5 is my dvd burner and the rest are disabled i have asus mb bios my motherboard is a sabertooth fx990 r2.0
When SATA is set to AHCI, some SSDs do not show in BIOS properly (on the device list boot screen) but only in BOOT order or Prmary BOOT menu. SSD should be connected to first SATA port that is set to AHCI mode.