How to go from AHCI to IDE just for firmware flashing on my SSD. Currently using windows 8. Tried a few times but kept getting the dreaded blue screen.
If you need to switch to the Legacy/IDE mode just for the firmware upgrade - the trick is not to let Windows boot up while in this mode. Most SSD firmware updates come as a bootable .iso images with their own flashers integrated anyway.
switch BIOS setting to IDE
switch BIOS back to AHCI
boot into Windows